Question

Vetri lent Rs. 2400 to Ganesh for 3 years and Rs. 3200 to Rakesh for 4 years and received from both Rs. 1000 as interest. Find the rate of interest.​

Answer 1

Question:-

Vetri lent Rs. 2400 to Ganesh for 3 years and Rs. 3200 to Rakesh for 4 years and received from both Rs. 1000 as interest. Find the rate of interest.

Answer:-

Description for Correct answer:

Let the Rate \% = R

According to the question,

$\frac{2400 \times 3 \times R}{100} + \frac{3200 \times 4 \times R}{100} = 1000 \\ 72R + 128R = 1000 \\ 200R = 1000 \\ R = 5\%.$

Hence required rate(in per) = 10%.

Answer 2

Step-by-step explanation:

Question:-

Vetri lent Rs. 2400 to Ganesh for 3 years and Rs. 3200 to Rakesh for 4 years and received from both Rs. 1000 as interest. Find the rate of interest.

Answer:-

Description for Correct answer:

Let the Rate \% = R

According to the question,

$\begin{gathered} \frac{2400 \times 3 \times R}{100} + \frac{3200 \times 4 \times R}{100} = 1000 \\ 72R + 128R = 1000 \\ 200R = 1000 \\ R = 5\%.\end{gathered} </p><p>100$

2400×3×R

+

100

3200×4×R

=1000

72R+128R=1000

200R=1000

R=5%.

Hence required rate(in per) = 10%.