Question

Rahul distributed 80% of his monthly salary between his two sons, A and B, in the ratio 5:3 respectively. A and B invested their respective amounts in schemes offering 10% simple interest and 12% simple interest for three years respectively. If the difference between the interests earned by A and B after three years is Rs. 2,100, find the amount of salary left with Rahul.

Q: Answer-Rahul distributed 80% of his monthly salary between his two sons, A and B, in the ratio 5:3 respecti...

Let the total monthly salary of Rahul Rs. x Amount distributed between A and B 80 of x Rs. 0.8x Amount received by A 0.8x 58 Rs. 0.5x Amount received by B 0.8x 38 Rs. 0.3x Interest earned by A 0.5x 0.10 3 Rs. 0.15x Interest earned by B 0.3x 0.12 3 Rs. 0.108x ATQ, 0.15x 0.108x 2100 Or, 0.042x 2100 Or, x 2100 0.042 So, x 50,000 Amount left with Rahul 20 of 50,000 0.20 50000 Rs. 10,000. Hence, the correct answer is A.