RRB NTPC SAMPLE PAPER - ARITHMETIC - 20

1. Price of sugar rises by 20%. By how much percent should the consumption of sugar be reduced so that the expendi­ture does not change?

(a) 20
(b) 10
(c) 50/3
(d) 15

2. In a school 70% of the students are girls. The number of boys are 510. Then the total number of students in the school is

(a) 850
(b) 1700
(c) 1830
(d) 1900

3. Applied to a bill for Rs. 1,00,000 the difference between a discount of 40% and two successive discounts of 36% and 4% is

(a) Nil
(b) Rs. 1,440
(c) Rs. 2,500
(d) Rs. 4,000

4. A tradesman marks his goods 10% above his cost price. If he allows his customers 10% discount on the marked price, how much profit or loss does he make, if any?

(a) 1% gain
(b) 1% loss
(c) 5% gain
(d) No gain, no loss

5. 0.6 of a number is equal to 0.08 of another number. The ratio of the numbers will be

(a) 3 : 4
(b) 4 : 3
(c) 2 : 15
(d) 2 : 9

Railway Recruitment Board (RRB) NTPC Exams Study Kit

Answer:

1. (c) 2. (b) 3. (b) 4. (b) 5. (c)