OG详解-OG4 数学1 Q7

The correct answer is 10. It’s given that the cost for the entire purchase was $27 after a coupon was used for $63 off the entire purchase. Adding the amount of the coupon to the purchase price yields 27 + 63 = 90. Thus, the cost for the entire purchase before using the coupon was  $90. It’s given that Nasir bought  9 storage bins. The original price for 1 storage bin can be found by dividing the total cost by 9. Therefore, the original price, in dollars, for 1 storage bin is 90​9​, or 10.