Percentage Quiz-2
Dear Readers,
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?
Solution
20% A = 60% B A = (60% / 20%) = B
A = 3B = 300% B
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
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
Þ 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
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
Solution
45 x ? = 25% of 900
Þ ? = (0.25 X 900) / 45 = 5
45 x ? = 25% of 900
Þ ? = (0.25 X 900) / 45 = 5
Q5. 218% of 1674 = ? x 1800
Solution
218% of
1674 = ? x 1800
? = (2.18 X 1674) / 1800
Q6. One fourth of one third of two fifth of a number is 15. What will be 40% of that number?
Solution
(1/4){(1/3)(2n/5)}= 15
Þ n = 15 x 5 x 3 x 2 = 450 Þ 0.4n -
0.4 x 450 = 180
Q7. What percent of 7.2 kg is 18 gms?
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.
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:
Solution
Data is inadequate. We need transportation expenses as % of total amount
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?
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
