Question

A sum amounts to Rs. 3720 in 8 months at 5% per annum simple interest. Find the sum.​

Answer 1

P=A/100+r x100

= 372000/100+5x8/I2

=372000/100+40/12

=372000x12/1240= Rs3600

Answer 2

Step-by-step explanation:

The Required Sum is Rs. 3600

Step-by-step explanation:

Simple interest(SI) =  

Where:

P is the Principle

R is the Rate

T is the Time.

Amount = SI + P

We are given:

Amount(A) = Rs 3720

Time(T)= 8 months =  

Rate(R)=5% = 0.05

We need to find P.

A = SI + P

P = A - SI

Substituting the formula for SI.

P = A - PRT

Substituting the known values