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John and 3 friends are going out for pizza for lunch. They split one pizza and 4 large drinks. The pizza cost $13.50. They spend a total of $19.90. Find the cost of one large drink.
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John and 3 friends are going out for pizza for lunch. They split one pizza and 4 large drinks. The pizza cost $13.50. They spend a total of $19.90. Find the cost of one large drink.

User DJ Spiess
by
9.2k points

1 Answer

5 votes
13.00 + 4X - 6.00 = 13.20

Combine the 13.00 - 6.00, getting 7.00

7.00 + 4X = 13.20

Subtract 7.00 from both sides:

7.00 + 4X = 13.20
-7.00 -7.00
------------------
4X = 6.00

Divide both sides by 4



X = $1.50
User Lazywiz
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8.1k points
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