Problema Solution
Sam Estero received a $50 gift card to iTunes for his birthday. If he downloaded 12 songs at $0.99 per song, 5 songs at $1.29 per song, and 4 apps for his iPhone at $1.99 per app, how much credit remained on the gift card?
Answer provided by our tutors
the cost for each item is known, therefore we simplify the subtraction of each cost from $50:
50 - 12(0.99) - 5(1.29) - 4(1.99)
23.71
Sam Estero has $23.71 credit remained on the gift card.