Ashok invests a certain sum of money at 20% per annum, compounded yearly. Geeta invests an equal amount of money at the same rate of interest per annum compounded half- yearly. If Geeta gets Rs. 33 more than Ashok in 18 months, calculate the money invested.

Explanation

Let money invested=P

Amount`(A_1)=P(1+R/100)^t`

`A_1=P(1+20/100)^(3/2)`

`A_1=P(1+1/5)^(3/2)`

`A_1=P(6/5)(11/10)`

`A_2=P(1+20/(200))^(3/2*2)`

`A_2=P(1+1/10)^3`

subtracting equation 1 from equation 2

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