If y varies directly with with x and y=20 when x= 2.5, what is the value of y when x = 8? (type the numerical value of x only)

asked Sep 15, 2018 165k views

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6 votes

y = kx
k = y/x = 20 / 2.5 = 8
when x = 8
y = kx = 8* 8
y = 64

answer
64

Omid N answered Sep 20, 2018

8.0k points

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