Candies 2597

Two bars and one candy cost 24 CZK.
Two candies and one bar cost CZK 27.
How much does candy cost?

Correct answer:

x =  10

Step-by-step explanation:


2x+y = 27
2y + x = 24

2·x+y = 27
2·y + x = 24

2x+y = 27
x+2y = 24

Row 2 - 1/2 · Row 1 → Row 2
2x+y = 27
1.5y = 10.5


y = 10.5/1.5 = 7
x = 27-y/2 = 27-7/2 = 10

x = 10
y = 7

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