Question

Janet and Kyle each purchase Blu Ray discs and Cd's from Amazon. Janet buys 3 Blu ray and 2 Cd's for $58. Kyle buys 1 Blu Ray and 4 Cd's for $46. How much does each Blu Ray and CD cost?

Answer 1

y = 20 x = 6

Explanation:

1 (3x+ 2y = 58 ------------> -3x + -2y = -58

1x + 2y = 46 --------------> 1x + 2y = 46

____________

-2x = -12

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-2x -2x

x = 6

3(6) + 2y = 58

18 + 2y = 58

-18 -18

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2y = 40

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2y 2y

y = 20