Yoko sold t-shirts at a festival. She made $6 for each t-shirt she sold. Her expenses were $30 . If she made a profit of $84 , how many t-shirts did she sell?
+130511 Call the number of shirts she sold, S. Then, her total revenue = $6 times the number of shirts she sold.
Total (Revenue) - Total Expenses = Total Profit ......so.....
6S - 30 = 84 add 30 to both sides
6S = 114 divide both sides by 6
S = 19 shirts
Hmmmmm.....another poorly worded problem
if she TRULY made 84 dollars PROFIT and she MADE 6 each shirt (it does NOT say she SOLD them for 6 ea) then 84/6 = 14 shirts and expenses are irrelevant in this question.
if she MADE 6 for each shirt then she must have priced them @ (84 + 30)/14 = 114/14 = 8.14 ea 2.14 of which was expense and 6 of profit.
