A college student borrowed $68,000 to pay for tuition, room, and board. Some of the money was borrowed at 4%, some at 6%, and some at 8%. How much (in dollars) was borrowed at each simple interest...

Extracted text: A college student borrowed $68,000 to pay for tuition, room, and board. Some of the money was borrowed at 4%, some at 6%, and some at 8%. How much (in dollars) was borrowed at each simple interest rate, given that the annual interest was $4,050 and the amount borrowed at 8% was three times the amount borrowed at 6%? 4% %24 6% 8% %24