Strong arithmetic foundation for SI exams
Hyderabad: This article is in continuation to the last article on preparation for the Sub-Inspector of Police recruitment exam. Here are some practice questions and answers along with explanations on the percentage topic. 1. What will be the fraction of 25%? A. 1/4 B. 1/5 C. 1/10 D. None of above Ans: A Explanation: Fraction […]
Hyderabad: This article is in continuation to the last article on preparation for the Sub-Inspector of Police recruitment exam. Here are some practice questions and answers along with explanations on the percentage topic.
1. What will be the fraction of 25%?
A. 1/4 B. 1/5 C. 1/10 D. None of above
Ans: A
Explanation:
Fraction of 25%=25/100=1/4
2. The ratio 5:25 expressed as percent equals to?
A. 50 % B. 125 % C. 25 % D. 20%
Ans: D
Explanation:
5:25=
Actually it means 5 is what percent of 25, which can be calculated as,
×100%=20%
3.How many litres of pure acid are there in 12 litres of a 30% solution?
A. 1.2 lt B. 2.4 lt C. 3.6 lt D.1.5 lt
Ans: C
Explanation:
Pure Acid in solution = 3.6 lt
4. 2 percent of one – fourth written as decimal is?
A. 0 5 B. 0.5 C. 0.05 D. 0.005
Ans: D
Explanation:
2percent of one – fourth =2% of = = = 0.005
5. What is 25 percent of 34?
A. 5.80 B. 8.50 C. 9.10 D. 6.10
Ans: B
Explanation:
25% of 34= 34 = 8.5
6. If sales tax is reduced from 11% to 10%, then what difference it will make if you purchase an item of Rs. 2000?
A. 10 B. 20 C. 30 D. 40
Ans: B
Explanation:
Difference= 11% of 2000-10% of 2000=220-200=20
7. A fruit seller had some apples. He sells 60% apples and still has 420 apples. Number of apples originally, he had:
A.880 apples B. 1600 apples C. 1672 apples D. 1050 apples
Ans: D
Explanation:
Percentage of total number of apples=100%
If he sells 60% of apples remaining apples percentage= 100%-60%=40%
Remaining apples= 420
40%=420,
100% = ?
=1050
Total number of apples=1050
8. In an election a candidate who gets 84% of the votes is elected by a majority of 476 votes. What is the total number of votes polled?
A. 672 B. 700 C. 749 D. 848
Ans: B
Explanation:
Winner’s Votes percentage = 84%
Losers’ Votes percentage = (100 – 84)% = 16%
Percentage of Total number of votes=100%
Percentage of majority votes= 84%-16%=68%
Given that
68%=476
100% = ?
= 700
Total no. Of votes=700
9. A student has to obtain 33% of the total marks to pass. He got 150 marks and failed by 48 marks. The maximum marks are?
A. 300 B. 600 C. 800 D. 1000
Ans: B
Explanation:
Percentage of total no. of marks=100%
Percentage of marks required to pass= 33%= 150 48=198
33% = 198
100% = ?
= 600
Total no. of marks= 600
10. If the price of 1 kg of rice increased by 25%, the increase is Rs.18. find the new price of rice per kg?
A. 48 B. 60 C. 90 D. 36
Ans: C
Explanation:
Given that 25%=18
The value of the rice after increasing the price= 100% 25%= 125%
25% = 18
125% = ?
= 90
11. The present population of a town is 25,000. The population of a town is increased by 20% per annum. Find the population of a town after 2years?
A. 30,000 B. 36,000 C. 40,000 D. None of these
Ans: B
Explanation:
Let the present population of a town be P and suppose it increases at the rate of R% per annum, then:
Population after T years =
P=25000, R=20%, T=2
Population of a town after 2years=
= 36000
Banda Ravipal Reddy
Director, SIGMA
Sai Institute of General Mental Ability
Hyderabad
