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?
- 25%
- 400%
- 200%
- 300%
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
- 6000
- 6200
- 6400
- 6450
Solution
Valid
votes = (100 – 10)% x – 60 = 0.9x – 60
votes = (100 – 10)% x – 60 = 0.9x – 60
Vote for
A = 0.47x
A = 0.47x
Vote for
B = 0.47x – 308
B = 0.47x – 308
Hence
0.47x + 0.47x – 308 = 0.9x – 60
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
- decrease of 10%
- decrease of 10%
- increase of 1%
- none of these
Solution
Let
initial population be 100
initial population be 100
Population
after 1st yr = (100 + 10) = 110
after 1st yr = (100 + 10) = 110
Population
after 2nd year = (110 – 11) = 99
after 2nd year = (110 – 11) = 99
Therefore,
total decrease of 1%
total decrease of 1%
Q4. 45 x ? = 25 % of 900
- 16.20
- 500
- 4
- 5
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
- 4
- 0.5
- 6
- none of these.
Solution
218% of
1674 = ? x 1800
1674 = ? x 1800
? = (2.18 X 1674) / 1800