Question

Rs 1500 is invested in two-part such that if one invested at 6%, and the other at 5% the total interest in one year from both investments is Rs 85. How much is invested at 5%?

• A. Rs. 500
• B. Rs. 1000
• C. Rs. 1500
• D. Rs. 4500

Answer 1

The correct option is A Rs. 500

If the whole money is invested at 6% the annual income is 6% of Rs 1500 = Rs 90. If the whole money is invested at 5% the annual income is 5% of Rs 1500 = Rs 75. But real income = Rs 85.
$\therefore$ Applying the alligation rule, we have


$\therefore$ Money invested at 5% $=\frac{1}{3}\times Rs1,500=Rs500$