Ashish lends Rs. 20000 in four different parts. If he gets 8% on Rs. 4000, 7.5% on Rs. 8000 and 8.5% on Rs. 2800. Find the percentage he will receive on the remaining amount if the annual average interest he receives is 8.13%
Answer : Ashish will receive interest of 9.6% on Rs. 5200.
I keep getting 9% as the answer. My maths teacher said it's 9.6%. Please help me, how?