Percentage Quiz-2

Maths is an important subject in CLAT,DULLB & Other Law Exams. In any of law exam, Maths carries weightage of 20 -25 % of questions. With focused practice good marks can be fetched from this section. These questions are very important in achieving your success in CLAT, DULLB and Other Law Exams..

Q1. 20% of A = 60% of B. what percent of B is A?
•  25%
•  400%
•  200%
•  300%
Solution
20% A = 60% B  A = (60% / 20%) = B
A = 3B = 300% B

Q2.10% of voters did not vote. 60 votes were invalid. A got 47% of votes in the list and B lost by 308 votes. The total number of voters is
•  6000
•  6200
•  6400
•  6450
Solution
Valid votes = (100 - 10)% x - 60 = 0.9x - 60
Vote for A = 0.47x
Vote for B = 0.47x - 308
Hence 0.47x + 0.47x - 308 = 0.9x - 60

Ãž 0.04x = 248           \ x = 6200
Q3. The population of a town increases by 10% in one year and then decreases by 10% in 2nd year. On the whole there was a/an
• decrease of 10%
•  decrease of 10%
•  increase of 1%
•  none of these
Solution
Let initial population be 100
Population after 1st yr = (100 + 10) = 110
Population after 2nd year = (110 - 11) = 99

Therefore, total decrease of 1%

Q4. 45 x ? = 25 % of 900
•  16.20
•  500
•  4
•  5
Solution
45 x ? = 25% of 900
Ãž ? = (0.25 X 900) / 45  = 5

Q5. 218% of 1674 = ? x 1800
•  4
•  0.5
•  6
•  none of these.
Solution
218% of 1674 = ? x 1800
? = (2.18 X 1674) / 1800 = 2.02

Q6. One fourth of one third of two fifth of a number is 15. What will be 40% of that number?

•  120
•  350
• 270
•  180
Solution
(1/4){(1/3)(2n/5)}= 15

Ãž n = 15 x 5 x 3 x 2 = 450  Ãž 0.4n - 0.4 x 450 = 180

Q7. What percent of 7.2 kg is 18 gms?

•  25%
•  2.5%
•  0.25%
•  0.025%
Solution
(18/7200) x 100 = (1/4)= 0.25%

Q8. A man loses 12.5% of his money and after spending 70% of the remainder, has left Rs 210. Find the money he had at first.

•  600
•  700
•  800
•  900
Solution
(100 - 12.5) (100 - 70)% money = 210

Money = 210 x (1/0.3) x (8/7) = 800

Q9. Of the total amount received by Kiran, 20% was spent on purchases and the remaining on transportation. If she is left with Rs 1520, the initial amount was:
•  2800
•  2000
•  2400
Solution
Data is inadequate. We need transportation expenses as % of total amount

Q10.In a library, 20% books are in Hindi, 50% of the remaining are in English and the remaining 9000 are in various other languages. What is the total number of books in English?

•  4000
•  3000
•  2250
•  None of these
Solution
Books in Hindi = 20% b
Books in English = (100 - 20)% (100- 50)%
= 0.8 x 0.5 b = 0.4 b
Remn. books = b - 0.2b - 0.4b = 0.4b = 9000

Books in English = 0.4b = 9000

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