GMAT Problem Solving (PS) | Re: A $500 investment and a $1,500 investment have a combined

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?

Total Amount = $500 + $1,500 = $2,000

Interest on TotalAmount:

\(= 2000 * \frac{8.5}{100}\)

\(= $170\)

Interest Amount on $500\(= 500 * \frac{7}{100}\)

\(= $35\)
Interest Amount for $500 + Interest Amount for $1500 = Interest Amount for $2000
35 + Interest Amount for $1500\(= 170\)

Interest
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