Question

1 . What sum will amount to Rs. 5,200 in 6 years at the same rate of simple intera
at which Rs. 1,706 amount to Rs. 3,412 in 20 years?

2 .The simple interest on a sum of money at the end of 8 years 2/5 th ofsum itself. Find the rate per cent p.a.
3 . A sum of money becomes double in 20 years at simple interest. In how ma
years will it be treble ?

4 . A certain sum of money at simple interest amounts to Rs. 560 in 3 years and to Rs. 600 in 5 years. Find the principal and the rate of interest.

5 . A tradesman marks his goods with two prices, one for ready money and the other for 6 month's credit. What ratio should two prices bear to each other, allowing 5% simple interest.

6 . A man borrowed from his banker Rs. 500 for 8 months on Dec. 31. At the end of 5 months, he repaid Rs. 372 and the remainder with interest on Aug. 31. If his
final payment was Rs. 137.61; find the rate of interest charged p.a. by the bank.
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Answer 1

33600.......................