Q87
ArithmeticSimple & Compound Interest
If a sum becomes $\frac{2495}{2000}$ of itself in $4\frac{1}{2}$ years, find the rate of interest p.a.?
- a.4%
- b.5%
- c.5·5%
- d.6%
Answer: (C) 5·5%
Taking simple interest, the interest is $\frac{495}{2000}$ = 24·75% of the sum over 4·5 years. The yearly rate is 24·75 ÷ 4·5 = 5·5%. At 5% the interest would be only 22·5%.