Question

6000 becomes 7200 in 4 years at a certain rate of simple interest. If the rate becomes
1.5 times of itself, what will be the same principal amount in 5 years at this new rate
of interest?​

Answer 1

꧁ ɦɛʀɛ'ֆ ȶɦɛ ǟռֆաɛʀ ꧂

Rs.8,250

By using formula,

Rate(in per)=12006000×1004=5%

New Rate(in per)=5×32=7.5%

Interest after 5 years

=6000×7.5×5100=Rs.2250

Hence, amount= Rs.(6000+2250)=Rs.8250