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Sagot :

Answer:

let s = number of buttons on a shirt

let j = number of buttons on a jacket

Create 2 equations from the given information:

Equation 1:  36s + 42j = 842

Equation 2:  6s + 7j = 137

If we multiply equation 2 by 6 we get:

⇒ 36s + 42j = 822

Comparing this with equation 1, we can see that the number of shirts and jackets is now the same BUT the number of buttons is different

Therefore, her hypotheses is incorrect and we cannot solve to determine the number of buttons on a shirt and/or jacket.