The cost of three boxes of envelopes and four boxes of notebooks paper is $13.25 2 boxes of envelopes and six boxes of notebook paper cost $17 find the cost of each

Question

Kadin

Mathematics

17 August, 00:13

The cost of three boxes of envelopes and four boxes of notebooks paper is $13.25 2 boxes of envelopes and six boxes of notebook paper cost $17 find the cost of each

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Gloria Miller · Answer 1

Y = envelopes x = notebook paper

-2 (4x + 3y = 13.25)

3 (6x + 2y = 17)

-8x - 6y = - 26.5

18x + 6y = 51

10x = 24.5

x = 2.45

4 (2.45) + 3y = 13.25

9.8 + 3y = 13.25

-9.8 - 9.8

3y = 3.45

y = 1.15 envelopes = $1.15 notebook paper = $2.45