Question

the simple interest on a certain sum for 3 years is rupees 225 and the compound interest on the same sum at the same rate for 2 years is rupees 153 find the rate of interest and the principal

Answer 1

75+75+75=225 s.i for 3 years

75+75+3=153 c.i for 2 years

rate=3*100/75=4%