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Question 1
The sum of two numbers is 1560. One of them is 160% of the other. The smaller number is?
Question 2
A number is first increased by 100%, and thereafter it is reduced by 100% again. What is the overall reduction?
100 %.
102 %.
98 %.
104 %.
Ans: a
Let us derive the shortcut formula first, so that you can remember it and use it when the need arises. Suppose the number is 100, and let the increase be x%. The number becomes 100 + x. When it is reduced by x%, we get 100 + x - $((100 + x) × x)/100$ = 100 + x - $(x + x^2/100)$ = 100 - $x^2/100$, hence a reduction of $x^2/100$ = 100%
Question 3
The number of online customers increased from 1075 to 2575. What is the percentage increase?
Question 4
The age of Mr. X is 20% more than Mr. Y's age which is 20 years at present. By what percent is Y's age less than Mr. X's age?
$16{2/3}$ %.
$26{1/2}$ %.
$15{2/3}$ %.
$11{4/5}$ %.
Ans: a
Age of Mr. X is 20 + ${20 × 20}/100$ = 24 years. Mr. Y's age is less than Mr. X's age by ${20 × 20}/100$ = 4 years. In terms of percentage, it is $4/24$ × 100 = ${50/3}$, which is same as: $16{2/3}$.
Question 5
A bag contains 280 red, 380 green and 1340 blue marbles. What percentage of the total is the most visible color in the bag?
This Blog Post/Article "Percentages Quiz Set 002" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2020-02-07. Published on: 2016-05-12