Question

1. What is the interest on
100 at 9 p.c.p.a. for 1 year?​

Answer 1

Answer:

The interest on rs 100 at 9p.c.p.a for 1 year is 9 rs

Step-by-step explanation:

Principal=100

Rate of interest = 9 p.c.p.a

Time = 1 year

Investment = ?

I = principal ×Rate of interest × Time/100

=100×9×1/100

= 1×9×1/1

= 9 Rupees

Answer 2

Given,

Principal amount (P) = Rs. 100

Rate (R) = 9% per annum

Time (T) = 1 year

To find,

The interest on Rs. 100 at 9% per annum for 1 year.

Solution,

The interest on Rs. 100 at 9% per annum for 1 year will be Rs. 9.

We can easily solve this problem by following the given steps.

We know that the formula to find the simple interest (SI) is Principal amount (P) × Rate (R) × Time (T)/100

SI = P × R × T/100

SI = 100 × 9 × 1/100

SI = Rs. 9

Hence, the interest on Rs. 100 at 9% per annum for 1 year is Rs. 9.

(The total amount after one year can be found by adding the interest to the principal amount. Note that the formula to find the compound interest annually is different from that of the simple interest.)