Mathematics Mcqs

3/20 is what percent of 12/25?

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3/20 is what percent of 12/25?

A. 42.75%
B. 31.25%
C. 35.5%
D. 40.5%
E. None of these
Explanation:
Let the required percentage be x%.
3/20 = x% of 12/25 => 3/20 = x/100 * 12/25
=> 12x = (300 * 25)/20 => x = (25 * 25)/20
=> x = 31.25%.

When 5% is lost in grinding wheat, a country has to import 20 million bags; but when only 2% is lost, it has to import only 15 million bags. Find the quantity of wheat, which grows in the country?

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When 5% is lost in grinding wheat, a country has to import 20 million bags; but when only 2% is lost, it has to import only 15 million bags. Find the quantity of wheat, which grows in the country?

A. 133 1/3 m
B. 150 m
C. 106 2/3 m
D. 166 2/3 m

Explanation:
5% – 2% = 3%
3% —- 5
100% —- ? => 166 2/3

A person was asked to subtract 25% of a number from the original but he subtracted 25 from the number. His answer was 25 more than correct one. What was the original number?

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A person was asked to subtract 25% of a number from the original but he subtracted 25 from the number. His answer was 25 more than correct one. What was the original number?

A. 160
B. 180
C. 225
D. 200
25 + 25 = 50
25% —— 50
100% —– ? => 200