Assume that y varies directly with x, then solve if y=12 when x=15, find x when y=21 and can someone explain to me how they got the answer because i got 16.8

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asked Mar 10, 2019 217k views

2 votes

Assume that y varies directly with x, then solve if y=12 when x=15, find x when y=21

and can someone explain to me how they got the answer because i got 16.8

Mathematics
middle-school

Travis Britz asked

by Travis Britz

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2 Answers

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If y is 12 when x is 15 that means that x is 3 more than y. x=y+3 so when y is 21, x=21+3 so x=24

Neoice answered Mar 11, 2019

by Neoice

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4 votes

24 beacuse x is 3 more than y

Chris Boon answered Mar 16, 2019

by Chris Boon

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