A part of certain sum of money is invested at 9% per annum and the rest at 12% per annum, if the interest earned in each case for the same period is equal, then ratio of the sums invested is?	Choices
A) 4:2	B) 4:8	C) 4:3	D) 4:0	E) 4:9
12:9   = 4:3   Answer: 4:3
<result>C</result>
A part of certain sum of money is invested at 9% per annum and the rest at 12% per annum, if the interest earned in each case for the same period is equal, then ratio of the sums invested is?