If the compound interest on a certain sum of money for 3 years at 10% p.a be ₹ 993. what would be the simple interest?

Explanation

Let principal=Rs.P,then `because P (1+10/1000)^3-P=993`
`rArr (11/10xx11/10xx11/10-1)P=993`
` `rArr((1331-1000)/1000)P=993 ``therefore`p=(993xx1000)/331 ``therefore`Simple interest
`= Rs.((3000xx3xx10)/100)`
= Rs.900`