3 shirts

Three shirts for $35
Two hats and a shirt for $20

Which system of equations can be used to find s, the cost of one, and h, the cost of one hat?

Correct answer:

h =  4.1667
s =  11.6667

Step-by-step explanation:


3·s =35
2·h+s=20

3s = 35
2h+s = 20

Pivot: Row 1 ↔ Row 2
2h+s = 20
3s = 35


s = 35/3 = 11.66666667
h = 20-s/2 = 20-11.66666667/2 = 4.16666667

h = 25/6 ≈ 4.166667
s = 35/3 ≈ 11.666667

Our linear equations calculator calculates it.



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