Sarah bought 2 drinks and 6 candies at the movie theater.
An equation shows the relationship between two or more numbers and variables.
Let x represent the number of drinks bought and y represent the number of candies bought.
Each drink costs $5 and each candy costs $4.25 and she bought $35.50 worth of drinks and candies. Hence:
5x + 4.25y = 35.50 (1)
She bought 3 times as many candies as drinks. Hence:
y = 3x
-3x + y = 0 (2)
Solving equations 1 and 2 simultaneously gives:
x = 2, y = 6
Sarah bought 2 drinks and 6 candies at the movie theater.
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