Question

A person invested 3 times as much money in a scheme giving $5\%$ per annum simple interest than he invested in a scheme giving $2\%$ per annum simple interest. Further, he invested Rs. 6000 more in a scheme giving $3\%$ per annum simple interest than he invested in a scheme giving $2\%$ per annum simple interest. If the total interest from the three investments after a year is Rs. 980, then what is the total amount he invested?

• A. Rs. 17600
• B. Rs. 18000
• C. Rs. 20000
• D. Rs. 26000

Answer 1

The correct option is D

Rs. 26000

Let the amount invested at 2% be rupees x.
Given the interest from 3 investments after 1 year
$\therefore \frac{3x\times 5}{100}+\frac{2x}{100}+\frac{(x+6000)\times 3}{100}=980$
$20x+18,000=98,000$
$20x=80,000$
$x=4000$
$\therefore Totalamountinvested=3x+x+x+6000$
$=5x+6000$
= Rs. 26000