Question

at what rate of simple interest will a sum of money double itself in 10years​

Answer 1

Step-by-step explanation:

Let the sum of money (principle)

be P.

Given,

Amount = 2P

S.I = A - P

= P

Time = 10years

Let the rate of interest be x.

R = S.I×100/P×T

x = S.I × 100 / P×10

x = P×100/P×10

x = 10%

Answer 2

Answer:

LET THE PRINCIPLE BE X

TIME = 10 years

Amount after 10 years gets doubled

so amount =2x

simple interest =amount -principle

simple interest =2x-x=x

Rate per annum=SI × 100/P ×T

= x ×100/x × 100

=100x/10x

=10

RATE PER ANNUM =10%

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