Question

In how much time will Rs. 900 become Rs. 1224 at the rate of 12% per annum?​

Answer 1

Answer:

Simple Interest = Principal (P) x Rate % (R) x Time (T) / 100

According to the question,

Principal (P) = 900

Rate % = 12 %

Simple Interest = 324

Time = ?

Substituting the values in the formula we get,

→ 324 = ( 900 x 12 x T /) / 100

→ 324 = (10800 T ) / 100

→ 324 = 108 T

→ T = 324 / 108

→ T = 3 years

Hence in 3 years, Rs. 900 will yield Rs. 324 as Simple Interest with 12 % per annum.

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Answer 2

Sir/Ma'am,

As the simple interest formula is

$\large \: S.I = \frac{p \times r \times t}{100}$

The simple interest which is earned = (1224-900=324)

$\large \: 324 = \frac{900 \times 12 \times t}{100}$

$\large \: t = \frac{324 \times 100}{900 \times 12}$

$\large \: = \frac{324}{9 \times 12}$

$\large \: t = \frac{36}{12} = \huge \: 3 \: yrs.$

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