Question

Rachit borrowed 15,000 from his
friend. He gave 3,000 at the rate of
15% per annum and the remaining
amount at the rate of 18% per annum.
How much interest did he pay in 4
years?​

Answer 1

Step-by-step explanation:

This answer may help you

Answer 2

Total money borrowed = 15000

Money at 15% interest = 3000

Remaining money at 18% interest rate.

Time = 4 years

Solution,

Consider the amount is p, rate is r, and time is t, then interest,

pxrxt 100

Calculate the interest.

3000x15x4 100 (15000-3000)×18x4 100

3000×15×4 12000×18×4 100 + 100

- 30 x 15 x 4 + 120 × 18 × 4

= 1800 + 8640 10440