Variables x and y are in direct proportion, and y = 12.5 when x = 25. If x = 40, then y = A) 20 B) 28.5 C) 52.5 D) 65 WILL UP PROVE

asked Dec 21, 2017 48.5k views

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Variables x and y are in direct proportion, and y = 12.5 when x = 25. If x = 40, then y =

A) 20
B) 28.5
C) 52.5
D) 65
WILL UP PROVE

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25/12.5 = 40/y
cross multiply
(25)(y) = (12.5)(40)
25y = 500
y = 500/25
y = 20 <====

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