Question

A $500 investment and a $1,500 investment have
a combined yearly return of 8.5 percent of the total of the two investments. If the $500 investment has a yearly return of 7 percent, what percent yearly return does the $1,500 investment have?

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Answer 1

Total investment by A= 500 + 1500 = 2000

Yearly return = 8.5 % of 2000

8.5/100 x 2000 = 170

Yearly return of 500 = 7% of 500

7\100 x 500 = 35

Let yearly return of 1500 is x

Yearly return = x% of 1500

x\100 x 1500 = 15x

A.T.Q

35 + 15x = 170

15x = 170-35

15x = 135

x = 9