Question

At a certian rate of interest the interest after 4year on 5000 rupees principal is 1200 rupees what would be the Interest on 15000 rupees at same rate of interest for the same period

Answer 1

Answer:

Step-by-step explanation:

Intrest = principle*rate*time/100

1200= 5000*rate*4/100

1200*100/5000*4 = rate

6 %= rate

15000*6*4/100

3600

Answer 2

Answer:

☆ Given-:

●The interest on Rs 5000 after 4 years is Rs 1200.

☆Find-:

●What would be the same rate of interest for the same period

●Taking the ratio of interest and principal

☆Solutions-:

P = ₹ 5,000

I = ₹ 1,200

I = 4 years

R = ?

$i = \frac{p \times r \times t}{100}$

$∴ \: 1200 = \frac{5000 \times 4}{100} \\ ∴1200 = 50 \times r \times 4 \\ ∴ \: 1200 = 200 \times r \\ ∴ \: r = \frac{1200}{200} \\ ∴ \: r = 6$

Let the interest on ₹ 15,000 be ₹ x

$then \: \frac{x}{15000} = \frac{1200}{5000}$

$∴ \: x = \frac{1200}{5000} \times 15000$

$∴ \: x = \frac{1200 \times 15000}{5000} = 3600 \\ ∴ \: x = 3600$

Hence-:

The interest is ₹ 3,600 .