Question

Some amount gives compound intrest for years rs 81.60 and simple interest 80 find rate of interest and principle

Answer 1

Answer:

Step-by-step explanation:

principle = (interest x 100) / (time x rate)

= Rs. (100 x 80)/(4 x 2) = Rs. 1000

∴ C.I. =Rs.[{1000 x (1 + 4/100)2 - 1000}]

= Rs. 81.60

Hope it helps you...