Question

2 5. A sum of money becomes double in 10 years at a certain rate of interest. Find the rate of interest [Hint: Let P= x, then A = 2x, I = x] ​

Answer 1

Answer:

Principal Ex rupees

AMOUNT = 2x rupees

S.I-A-P=p rupees

Time = 10 years

Rate of interest=100xS.I/PxT

=100XP/Px10

= 10%p.a.