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Joe paid x dollars for a pair of jeans. Dennis bought the same pair of jeans for 3 times as Joe. If they paid a total of $84 for the 2 pairs, how much did each spend on their jeans?


Please help!!!!

Respuesta :

zexius
Joe = x
Dennis = 3x

Joe + Dennis = 84

or in other words

x + 3x = 84

4x = 84

x = 84 / 4

x = 21

And if we remember that Joe was x and Dennis was 3x, you can just substitute x to find out how much they paid.

1(21) = 21 = Joe paid $21

3(21) = 63 = Dennis paid $63. 

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