Tori chang and kai chang sell cookies for girl scouts. over the past 6 months they sold 110 boxes of cookies. kai sold 4 times as many boxes of cookies as tori. how many boxes of cookies did each sell?

For this case, we propose a system of two equations with two unknowns.

Let:

x: The variable that represents the number of biscuit boxes sold by Tori Chang

y: The variable that represents the number of biscuit boxes sold by Kai Chang

Between the two they sold 110 boxes of cookies:

If Kai sold 4 times more boxes of cookies than Tori we have:

We substitute the second equation in the first:

Then, Tori Chang sold 22 boxes of cookies.

Kai Chang sold 88 boxes of cookies.

Tori Chang: 22 Boxes

Kai Chang: 88 boxes

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

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