Question

Hoya and her children went into a movie theater and she bought $30 worth of drinks and candies. Each drink costs $4 and each candy costs $3. She bought 4 more drinks than candies. Determine the number of drinks and the number of candies that you bought.

Answer 1

Answer: Houa bought 6 drinks and 2 candies.

Explanation:

x = drinks

y = candy

Equations: 4x + 3y = 30

x = 4 + y

Substitute:

4(4+y) + 3y = 30

16 + 4y + 3y = 30

16 + 7y = 30

-16 -16

7y = 14

(divide 7 on both sides)

y = 2

(Substitute the y = 2 into this equation)

x = 4 + y

x = 4 + 2

So x = 6 and y = 2