3 years ago

Marcia has $84 less than three times as much as sue. together they have $132. how much money does marcia have?

1 answer:

5 0

Let x = sue
and then let 3x-84 = marcia
therefore
(x)+(3x-84)=132
4x-84=132
4x=216
x=54

however just solving for x doesnt completely solve. it only shows sues money because x = sue
for marcia
3x-84
3(54)-84
162-84
78

therefore Marcia has 78$.

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