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

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

1. A farmer borrowed Rs. 4200 at 10% per annum. At the end of 5 yr he cleared his account by paying Rs. 5000 and a cow. The cost of the cow is

(a) Rs. 1300
(b) Rs. 1240
(c) Rs. 1200
(d) Rs. 1340

2. The difference between the simple interest received from two different sources on Rs. 5200 for 2½ yr is Rs. 65. The difference between their rates of interest is

(a) 0.5%
(b) 0.25%
(c) 0.4%
(d) 0.75%

3. A sum of Rs. 8000 was lent partly at 7% and partly at 9% simple interest. If the total annual interest be Rs. 620, the ratio in which the money was lent at given rates is

(a) 5 : 3
(b) 1 : 4
(c) 2 : 3
(d) 3 : 4

4. Rs. 2000 is invested at 10% per annum simple interest. If the interest is added to the principal every 10 yr, the amount will become Rs. 4600 after

(a) 12½ yr
(b) 11 yr
(c) 12 yr
(d) 11½ yr

5. A bicycle is sold for Rs. 2200 cash or Rs. 1500 cash down payment and Rs. 770 to be paid after 4 months. What is the rate of interest charged in the instalment scheme?

(a) 10%
(b) 20%
(c) 30%
(d) 40%

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