Question discussion

A certain sum invested at simple interest for 31⁄2 years amounts to ₹6,747 and for 5 years amounts to ₹7,410 at the same rate per cent per…

3620Medium DSSSB TGT Computer Science 0 replies

A certain sum invested at simple interest for 3¹⁄₂ years amounts to ₹6,747 and for 5 years amounts to ₹7,410 at the same rate per cent per annum. The rate of interest p.a. is:

A8.5%
B7.5%
C8%
D9%

Correct answer: A

Explanation

Interest for 1.5 years = 7410 − 6747 = ₹663, so interest per year = ₹442. Principal = 6747 − 3.5 × 442 = ₹5,200. Rate = 442/5200 × 100 = 8.5%.

Join the discussion Report an error

Discussion 0

Nobody has replied yet. Start the discussion!