Staples sells CD's ($2.00) and boxes of computer paper ($3). If total sales were $1,560 and customers bought 5 times as many CD's as boxes of computer paper, how many CD's were sold

Question

anonymous · Answer

600 CDs were sold and 120 boxes.

anonymous · Answer

System of equations here. Therefore you need two equations:
1560 = 2c + 3b
c = 5b

anonymous · Answer

i get it now

anonymous · Answer

Plug in 5b for c in the first equation:
1560 = 2(5b) + 3b

Simplify

1560 = 10b + 3b

1560 = 13b

Solve for b by dividing both sides by 13.

(b)oxes of paper = 120

c = 5(b) = 5(120) = 600

anonymous · Answer

That's a little more thorough.

anonymous · Answer

it helps and is gretaly appreciated

anonymous · Answer

Not a problem. Take care