SW4 wrote:
A soda machine sells both bottles and cans, and no other items. Bottles cost $1.50 each, while cans cost $0.75 each. If on one day, the soda machine sold 250 total beverages and yielded $315, how many more bottles than cans were sold?
A) 60
B) 80
C) 90
D) 115
E) 170
We can let b = the number of bottles of soda sold and c = the number of cans of soda sold, and create the equations:
b + c = 250
and
1.5b + 0.75c = 315
Multiplying the first equation by 3, we have 3b + 3c =750…….[Eq. 1]
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