(Study Material) RRB NTPC (Tier -2) Exam (Numerical Aptitude) - Percentage

(Study Material) RRB NTPC (Tier -2) Exam (Numerical Aptitude) - Percentage

1. The population of a town was 150000 three years ago. If it is increased by 2%, 2.5% and 4% respectively in last 3 yr then the present population is

(a) 163098
(b) 164049
(c) 163154
(d) 164145

2. If the number of a fraction is increased by 150% and the denominator is increased by 300%, the resultant fraction is 5/12 What was the original fraction?

(a) 2/3
(b) 1/3
(c) 3/5
(d) 2/5

3. The boys and girls in a college are in the ratio of 3 : 2. If 25% of the boys and 20% girls are adults, percentage of students who are minor is

(a) 75%
(b) 77%
(c) 80%
(d) None

4. The radius of a circle is increased by 2%. The percentage increase in the area is

(a) 2.02%
(b) 4.04%
(c) 3%
(d) 4%

5. If P is a % more than Q and Q is b% less than P, then

(a) 1/a – 1/b = 100
(b) 1/a – 1/b = 1/100
(c) 1/a + 1/b = 100
(d) 1/b – 1/a = 1/100

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