Question

a sum invested at 4% SI p.a. grows to rs 648 in 5 years in 2 years the same amount at 10% SI p.a. will grow to ?

Answer 1

Let the sum be x

Si = prt/100

648 = (x*4*5) / 100

x = 3240

Principal is 3240

New SI = (3240*10*2) / 100

= 648

So it will remain same at 10% for 2 years