At a certain rate of interest, the interest after 4 years on Rs 5000 p

1.	At a certain rate of interest, the interest after 4 years on Rs 5000 principal is Rs 1200. What would be the interest on Rs 15000 at the same rate of interest for the same period?
Answer» The interest on Rs 5000 after 4 years is Rs 1200. Let us suppose the interest on Rs 15000 at the same rate after 4 years is Rs x. Taking the ratio of interest and principal, we get ∴ x/1500 = 1200/5000 ∴ x = (1200 x 15000)/5000 = Rs 3600 ∴ The interest received on Rs 15000 is Rs 3600.

At a certain rate of interest, the interest after 4 years on Rs 5000 principal is Rs 1200. What would be the interest on Rs 15000 at the same rate of interest for the same period?

Answer»

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

Let us suppose the interest on Rs 15000 at the same rate after 4 years is Rs x.

Taking the ratio of interest and principal, we get

∴ x/1500 = 1200/5000

∴ x = (1200 x 15000)/5000

= Rs 3600

∴ The interest received on Rs 15000 is Rs 3600.