yo8denNaiiFingpopbo yo8denNaiiFingpopbo

24-12-2016
Mathematics

contestada

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

Respuesta :

texaschic101 texaschic101

24-12-2016

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

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