Aptitude - Percentage
Exercise : Percentage - General Questions
- Percentage - Formulas
- Percentage - General Questions
1.
A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?
Answer: Option
Explanation:
Number of runs made by running = 110 - (3 x 4 + 8 x 6)
= 110 - (60)
= 50.
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![]() |
50 | x 100 | ![]() |
5 | % |
110 | 11 |
Video Explanation: https://youtu.be/X2zTnABqEHU
2.
Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are:
Answer: Option
Explanation:
Let their marks be (x + 9) and x.
Then, x + 9 = | 56 | (x + 9 + x) |
100 |
25(x + 9) = 14(2x + 9)
3x = 99
x = 33
So, their marks are 42 and 33.
3.
A fruit seller had some apples. He sells 40% apples and still has 420 apples. Originally, he had:
Answer: Option
Explanation:
Suppose originally he had x apples.
Then, (100 - 40)% of x = 420.
![]() |
60 | x x = 420 |
100 |
![]() |
![]() |
420 x 100 | ![]() |
60 |
Video Explanation: https://youtu.be/-Pv25Do3WwY
4.
What percentage of numbers from 1 to 70 have 1 or 9 in the unit's digit?
Answer: Option
Explanation:
Clearly, the numbers which have 1 or 9 in the unit's digit, have squares that end in the digit 1. Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69.
Number of such number =14
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![]() |
14 | x 100 | ![]() |
70 |
Video Explanation: https://youtu.be/cBamI6iRNIA
5.
If A = x% of y and B = y% of x, then which of the following is true?
Answer: Option
Explanation:
x% of y = | ![]() |
x | x y | ![]() |
= | ![]() |
y | x x | ![]() |
= y% of x |
100 | 100 |
A = B.
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