(Sample Material) CSAT Online Coaching : Basic Numeracy "Percentage"

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Subject: Basic Numeracy

Topic: Percentage

1. The population of a town increased from 1,75,000 to 2,62,500 in a decade. The average percent increase of population per year is:

(a) 7%
(b) 5%
(c) 9%
(d) 8.75%

2. When 15% is lost in grinding wheat, a country can export 30 lakh tons of wheat. On the other hand, if 10% is lost in grinding, it can export 40 lakh tons of wheat. The production of wheat in the country is:

(a) 40 lakh tons
(b) 400 lakh tons
(c) 200 lakh tons
(d) 900 lakh tons

3. The price of a book is reduced by 25%, what is the ratio of change in price to the old price?

(a) 1 : 4
(b) 4 : 1
(c) 5 : 4
(d) 4 : 5

4. A student multiplied a number by 2/5 instead of 2/5. What is the percentage error in the calculation?

(a) 82%
(b) 86%
(c) 84%
(d) 89%

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