A person lent Rs 10000 to B for 3 years and Rs 6000 to C for 4 years on simple interest at same rate of interest and received Rs 5400 in all from both ofthem as interest. What is the rate of interest (in %)?

A person lent Rs 10000 to B for 3 years and Rs 6000 to C for 4 years o

1.	A person lent Rs 10000 to B for 3 years and Rs 6000 to C for 4 years on simple interest at same rate of interest and received Rs 5400 in all from both ofthem as interest. What is the rate of interest (in %)?
A.	10
B.	12
C.	20
D.	25
Answer» B. 12