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The cafeteria sold pizza and burritos. Burritos sold for $3.50 each and pizza slices sold for $2.75 . A total of 20 items were sold and the cafeteria collected $61. How many pizza slices were sold

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Answer:

12

Step-by-step explanation:

Let :

x = number of Pizza's

y = number of burritos

x + y = 20 - - (1)

2.75x + 3.50y = 61 - - (2)

From (1) :

y = 20 - x

2.75x + 3.50(20 - x) = 61

2.75x + 70 - 3.50x = 61

-0.75x = 61 - 70

-0.75x = - 9

x = 9/0.75

x = 12

12 pizza slices

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