Ease Into Prep with an SAT^® Question of the Day

Set up a system of equations. Let r represent the number of rolls and let h represent the number of sheets. Since the customer bought 5 items, r + h = 5. The cost of one roll is $66, and the cost of one sheet is $13.20. The customer paid a total of $118.80, so the second equation is 66r + 13.20h = 118.80. To solve for h, use combination to eliminate the r terms in the two equations. Multiply the first equation by 66 and then subtract the second equation:
66(r + h) = 66(5)
66r + 66h = 330

66r + 66h = 330
−(66r+13.20h = 118.80)
52.80h = 211.20
h = 4

The customer bought 4 sheets. Choice (D) is correct.