Andy C. answered • 05/09/18

Tutor

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Math/Physics Tutor

Y = X + 5

8x + 11Y = 454

8x + 11(x+5) = 454

8x + 11x + 55 = 454

19x = 399

x = 21

She bought 21 of X and 26 of Y

CHECK:

21*8 + 26*11 = 168 + 286 = 454 <--- yes it works

Chy H.

05/10/18