What is the rate of simple interest for the first 4 years if the sum…

Question

What is the rate of simple interest for the first 4 years if the sum of Rs. 360 becomes Rs. 540 in 9 years and the rate of interest for the last 5 years is 6%?

Accepted Answer

Option B. 5%. Answer & Solution Answer: Option B Solution: & Interest\, for\, the\, last\, 5\, years & = PTR100 & = 360 × 5 × 6100 = Rs.\,108 & Interest\, for\, year = 540 - 360 = 180 & So,\, interest\, for\, first\, four\, years & = 180 - 108 = Rs.\,72; & Now,\, rate\, for\, first\, four\, y…