Ques 18 Ex 14.2 Compound Interest & Annuity : Class 11 Applied Maths ML Aggarwal

Ques 18 Ex 14.2 Compound Interest & Annuity : Class 11 Applied Maths ML Aggarwal

A certain sum amounts to 798.60 after 3 years and ? 878.46 after 4 years. Find the interest rate and the sum.