Online Mock Test in Percentage For Quantitative Aptitude for Competitive exams like IBPS BANK PO/Clerical,SBI,RRB,SSC,LIC,UPSC-CSAT,SCRA.MAT,CMAT,MBA,SNAP,CAT,NTSE,CLAT
Percentage-Test 7
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Subject :- Quantitative Aptitude
Chapter :- Percentage- Test 7
Questions :- 25
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If the numerator of a fraction is increased by 150% and the denominator of the fraction is increased by 350%,the resultant fraction is 25/51.what is the original fraction?
Correct
let the fraction be X/Y
ten. Xx250/Yx450=25/51
X/Y=25/51×450/250=15/17
Incorrect
let the fraction be X/Y
ten. Xx250/Yx450=25/51
X/Y=25/51×450/250=15/17
Question 2 of 25
2. Question
1 points
If the numerator of a fraction is increased by 20% and the denominator of the fraction is increased by 25%,the resultant fraction is 3/5.what is the original fraction?
Correct
let the original fraction be X/Y
ten. Xx120/Yx125=3/5
X/Y=3/5×125/120=5/8
Incorrect
let the original fraction be X/Y
ten. Xx120/Yx125=3/5
X/Y=3/5×125/120=5/8
Question 3 of 25
3. Question
1 points
If the numerator of a fraction is increased by 200% and the denominator of the fraction is increased by 300%,the resultant fraction is 15/26.what is the original fraction?
Correct
let the original fraction be X/Y
ten. Xx300/Yx400=15/26
X/Y=15/26×400/300=60/78=10/13
Incorrect
let the original fraction be X/Y
ten. Xx300/Yx400=15/26
X/Y=15/26×400/300=60/78=10/13
Question 4 of 25
4. Question
1 points
If the numerator of a fraction is increased by 300% and the denominator of the fraction is increased by 100%,the resultant fraction is 1×11/19.what is the original fraction?
Correct
let the original fraction be X/Y
ten. Xx400/Yx100=30/19
X/Y=30/19×100/400=30/38=15/19
Incorrect
let the original fraction be X/Y
ten. Xx400/Yx100=30/19
X/Y=30/19×100/400=30/38=15/19
Question 5 of 25
5. Question
1 points
In a collage,the number of students studying arts,commerce and science are in the ratio of 3:5:8.if the number of students studying arts,commerce and science is increased by 20%,40.% and 25%,what will be new ratio of students in arts,commerce and science?
Correct
here,ratio of number of students studying arts,commerce and science=3:5:8
new ratio=3×120/100:5×40/100:8×120/100
=360:700:1000=18:35:50
Incorrect
here,ratio of number of students studying arts,commerce and science=3:5:8
new ratio=3×120/100:5×40/100:8×120/100
=360:700:1000=18:35:50
Question 6 of 25
6. Question
1 points
A papaya tree was planted 2 Yr ago. it increases at the rate 20% every yr. if at present, the height of tree is 540cm, what was it when the tree was planted?
Correct
we can do it directly as height of the tree = 540×100/120×100/120 = 540×100/144 = 375cm
Incorrect
we can do it directly as height of the tree = 540×100/120×100/120 = 540×100/144 = 375cm
Question 7 of 25
7. Question
1 points
population of a country increases every Yr by 10%. if the population in january 2006 was 15.8 lakh, what will be the population in january 2008?
Correct
here, population of the country increases at the of 10% every Yr
If tax on a commodity is reduced by 10%, total revenue remains unchanged. what is the percentage increase in its consumption?
Correct
here, to keep revenue unchanged, we increase the consumption by = 10/100-10×100 = 10/90×100 = 11.11%
Incorrect
here, to keep revenue unchanged, we increase the consumption by = 10/100-10×100 = 10/90×100 = 11.11%
Question 10 of 25
10. Question
1 points
the price of sugar is increased by 25%. if a family wants to keep its expenses on sugar unaltered, then the family will have to reduce the consumption of sugar by?
Correct
here, to keep expenses unaltered, reduce the consumption by = 25/100+25×100=1/5×100=20%
Incorrect
here, to keep expenses unaltered, reduce the consumption by = 25/100+25×100=1/5×100=20%
Question 11 of 25
11. Question
1 points
due to a 25% increase in the price of rice per kg, a person is able to purchase 20 kg less for rs 400.what is the increased price of rice per kg?
Correct
here, increase in price reduced the consumption by 25/100+25×100=20%
now, 20%=20kg
so, 100%=100kg
price per kg =400/100=rs 4/kg
new price=4×125/100=rs 5/kg
Incorrect
here, increase in price reduced the consumption by 25/100+25×100=20%
now, 20%=20kg
so, 100%=100kg
price per kg =400/100=rs 4/kg
new price=4×125/100=rs 5/kg
Question 12 of 25
12. Question
1 points
The price of rice is reduced by 5%. how many kg’s of rice can now be bought for the money, which was sufficient to buy 50 kg of rice earlier?
Correct
here, reduce in price makes the person bought more rice by 5/100-5×100 = 500/95 = 100/19%
so, he can now buy, 50+50×100/1900 = 50+2.63 = 52.63 kg
Incorrect
here, reduce in price makes the person bought more rice by 5/100-5×100 = 500/95 = 100/19%
so, he can now buy, 50+50×100/1900 = 50+2.63 = 52.63 kg
Question 13 of 25
13. Question
1 points
The price of rice is decreased by 6.25%. and because of this reduction, vandana is able to buy one kg more for Rs 120. find the reduced rate of rice?
Correct
here, reduction in price, increase the consumption by 6.25/93.75×100 = 6.70%
6.70% can be written in fractional value as 1/15 = 1 kg
An interview panel found that a candidate has given a wrong data about his height. while filling up his form, he filled up 20% more than his actual height. his actual height is 5 ft 2 inch. by what approximate percent should he reduce his height to get actual height?
Correct
here, he filled up his height 20% more than his actual height
Fresh grapes contain 80% water while dry grapes contain 10% water. if the weight of dry grapes is 225 kg, what was its total weight when it was fresh?
Correct
here, weight of the pulp is always constant
weight of pulp is 20 kg, then weight of fresh fruit is 100 kg
weight of pulp is 100/20 kg when weight of fresh fruit is 1 kg
weight of pulp is 225 kg, when weight of fresh fruit = 100/20×225 kg = 5×225 kg = 1125 kg
Incorrect
here, weight of the pulp is always constant
weight of pulp is 20 kg, then weight of fresh fruit is 100 kg
weight of pulp is 100/20 kg when weight of fresh fruit is 1 kg
weight of pulp is 225 kg, when weight of fresh fruit = 100/20×225 kg = 5×225 kg = 1125 kg
Question 16 of 25
16. Question
1 points
Fresh grapes contain 80% water while dry grapes contain 15% water. how many kg’s of dried grapes can be obtained from 3.4 kg of fresh grapes?
Correct
here, amount of water in fresh grapes = 3.4×80/100 = 3.4×0.8 = 2.72 kg
so, weight of the pulp = 3.4 – 2.72 = 0.68 kg
85 kg of pulp is obtained when dried grapes is 100 kg
1 kg of pulp is obtained when dried grapes = 100/85 kg
therefore, 0.68 kg pulp is obtained when = 100/85×0.68 = 0.8 kg
Incorrect
here, amount of water in fresh grapes = 3.4×80/100 = 3.4×0.8 = 2.72 kg
so, weight of the pulp = 3.4 – 2.72 = 0.68 kg
85 kg of pulp is obtained when dried grapes is 100 kg
1 kg of pulp is obtained when dried grapes = 100/85 kg
therefore, 0.68 kg pulp is obtained when = 100/85×0.68 = 0.8 kg
Question 17 of 25
17. Question
1 points
Fresh cherries contain 99% water. suppose you have 1 kg of fresh cherries. after a few hours in the sun, some water evaporates and the percentage of water in the cherries becomes 98%. the new weight ( in g ) cherries is
Correct
here, amount of pulp is always constant
WATER PULP
CASE 1 99X X
CASE 2 98Y 2Y
so, X = 2Y
99x2Y+2Y = 1 kg
200Y = 1
Y = 1/200
100Y = 1/200×100 = 1/2 kg = 500 grams
Incorrect
here, amount of pulp is always constant
WATER PULP
CASE 1 99X X
CASE 2 98Y 2Y
so, X = 2Y
99x2Y+2Y = 1 kg
200Y = 1
Y = 1/200
100Y = 1/200×100 = 1/2 kg = 500 grams
Question 18 of 25
18. Question
1 points
p and q are inversely proportional to each other and are positive.if p increased by 100%,then q decreased by
Correct
here,
$p\infty \frac{1}{q}$$\Rightarrow $
pq=k
so,to keep the pq=constant
q=100/100+100×100=1/2×100=50%
therefore,q decreases by 50%
Incorrect
here,
$p\infty \frac{1}{q}$$\Rightarrow $
pq=k
so,to keep the pq=constant
q=100/100+100×100=1/2×100=50%
therefore,q decreases by 50%
Question 19 of 25
19. Question
1 points
In a market research project,20% opted for nirma detergent whereas 60% opted for surf blue detergent.the rest were unsure.if the difference between those who opted for surf blue and those who were uncertain is 720.how many respondents were covered in survey?
Correct
here,no of persons included in survey be X,then
X x (60-20)%=720
X x 40/100=720
X=720 x 100/40=1800
Incorrect
here,no of persons included in survey be X,then
X x (60-20)%=720
X x 40/100=720
X=720 x 100/40=1800
Question 20 of 25
20. Question
1 points
12 of 26 % of 5/78 of 38% of 7/152 of 10000=?
Correct
Incorrect
Question 21 of 25
21. Question
1 points
If 15% of A is equal to 20% of B,then 25% of A equal to what percent of B?
Correct
Incorrect
Question 22 of 25
22. Question
1 points
A number increased by 137.5% (137×1/2%) and the increment is 33.the number is
Correct
Incorrect
Question 23 of 25
23. Question
1 points
A’s salary is 20% less than B’s salary.Then B’s salary is more than A’s salary by
Correct
Incorrect
Question 24 of 25
24. Question
1 points
A person’s salary has increased from Rs 7200 to Rs 8100.what is the percentage increase in his salary?
Correct
Incorrect
Question 25 of 25
25. Question
1 points
A man losses 20% of his money.after spending 25% of the remainder,he has Rs 480 left.what is the amount of money he originally had?