Question

Find the rate of interest for 2 years on principal Rs. 1200 and simple interest is Rs. 120.​

Answer 1

Answer:

rate is 5%.

do this question by assuming rate as x.

Answer 2

Given:

➺Time: 2 years

➺Principal: Rs.1200

➺simple interest: Rs.120

To Find:

➺Find the rate of interest.

Solution:

$: \implies \sf \purple{S.I} = \frac{p \times t \times r}{100} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ : \implies \sf \purple{120} = \frac{ 12\cancel {00} \times 2 \times r}{1 \cancel{00} } \: \: \: \: \: \: \\ \\ : \implies \sf \purple{120} = 12 \times 2 \times r \: \: \: \: \: \: \: \: \: \: \: \\ \\ : \implies \sf \purple{120} = 24 t\times r \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\: \implies \sf \purple{rate \: of \: interest} = \frac{120}{24} \: \: \\ \\ : \implies \sf \purple{rate \: of \: interest} = 5\% \: \: \: \:$

$\green{\sf{ - @MrCostheta }}$