At a snack bar, hot dogs cost $3.50 and hamburgers cost $5.00. if the snack bar sold 27 snacks and made $118.50 in revenue, how many hot dogs were sold? how many hamburgers?

Answer is 16

d = hot dogs sold b = hamburgers sold
hot dogs cost $3.50 → 3.5d
hamburgers cost $5 → 5b
snack stand sold 27 snacks → d + b = 27
made $118.50 in revenue → Total $ = 118.5 d + b = 27 3.5d + 5b = 118.5 −5d − 5b = −135+ 3.5d + 5b = 118.5 −1.5d + 0b = −16.5
d = 11
d + b = 27
11 + b = 27
b = 16

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