Ashok lent out ₹ 7,000 at 6% and ₹ 9,500 at 5%. Find his total income from the interest in 3 years.

Given:

P = ₹ 7,000

R = 6%

T = 3 years

$\because \text{S.I.} = ₹ \Big(\dfrac{P \times R \times T}{100}\Big)\\[1em] \Rightarrow \text{S.I.} = ₹ \Big(\dfrac{7,000 \times 6 \times 3}{100}\Big)\\[1em] \Rightarrow \text{S.I.} = ₹ \dfrac{1,26,000}{100}\\[1em] \Rightarrow \text{S.I.} = ₹ 1,260$

P = ₹ 9,500

R = 5%

T = 3 years

$\because \text{S.I.} = ₹ \Big(\dfrac{P \times R \times T}{100}\Big)\\[1em] \Rightarrow \text{S.I.} = ₹ \Big(\dfrac{9,500 \times 5 \times 3}{100}\Big)\\[1em] \Rightarrow \text{S.I.} = ₹ \dfrac{1,42,500}{100}\\[1em] \Rightarrow \text{S.I.} = ₹ 1,425$

Total income from the interest = ₹ 1,260 + ₹ 1,425 = ₹ 2,685

Hence, total amount from the interest in 3 years = ₹ 2,685.