Question

An amount of money double itself in 10years. What is the rate of interest?
(a) 10% p.a
(b) 20% p.a.
(c) 5% p.a.
(d) 15% p.a.​

Answer 1

Answer:

10%p.a.

hope so this helps you.....

Answer 2

Answer:

10%p.a

Step-by-step explanation:

T = 10 yrs

P = X

SI = X ( because the P is doubled, SI should be equal to P )

SI = P * R * T / 100

X = X * R * 10 / 100

X * 100 = X * R * 10

100X = X * R * 10

100X / 10 = X * R

10X = X * R

10X / X = R

THEREFORE, R = 10%p.a.