Comprehension Passage
Sitaram, a money lender lent a part of Rs. 200000 to Shyam at simple interest 6% p.a. and the remaining to Sushil at 10% p.a. at simple interest. Sitaram earned an annual interest income of Rs. 18000. Based on the given information answer the following questions:
What is the mean rate of interest?
1
6% p.a.
2
8% p.a.
3
9% p.a.
4
16% p.a.