The cost of 3 pizzas and 4 sandwiches at Ralph's Deli is $68. The cost of 3 pizzas and 7 sandwiches is $92. What is the cost of
one pizza and one sandwich?
1 answer:
Pizza is 12. Sandwich is 8. Total for both is 20.
92-68=24
24/3=8
8*4=32
68-32=36
36/3=12
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21 x 1.6 = 34.99999999
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The equation of direct variation is y=kx.
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