Question

Radha deposits 7500 rupees in a bank with 6% annual simple interest, how much amount he invests at 10% annual rate so that he gets the same simple interest in one year at 8.5% rate on the total investment.

Answer 1

if the rate is for 1 yr then the amount will be same for the Si and CI

p=RS7500

R=12%

T=9/12=3/4

SI=Rs(7500x12x3/4x100)

therefore the result is Rs 675

A= Rs(7500+675)

 =Rs  8175

 So he had received the amount of Rs8175

$.$