Question

A part of sum of Rs 10000 is lent at 8% and the remaining sum at 10% per annum. If the average rate of interest is 9.2%, then the two parts are:

• A. Rs 4000, Rs 6000
• B. Rs 5500, Rs 4500
  
• C. Rs 5000, Rs 5000
  
• D. Rs 5500, Rs 4500
• E. None of these

Answer 1

The correct option is A Rs 4000, Rs 6000

By the rule of alligation

$\therefore$ First part =$\frac{0.8}{2}\times 1000=Rs4000$
Second part = Rs 6000.