Y varies directly with x, and y = 2 when x = 5. What is the value of x when y = 15? A. x = 25 B. x = 10 C. x = 6 D. x = 37.5

asked Jun 3, 2018 210k views

2 votes

Y varies directly with x, and y = 2 when x = 5.

What is the value of x when y = 15?

A. x = 25
B. x = 10
C. x = 6
D. x = 37.5

by Totic

5.9k points

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4 votes

2/5 = 15/x

cross multiply
x =6

Hdk answered Jun 6, 2018

by Hdk

5.4k points

3 votes

We can see that y has to be multiplied by 2.5 in order to get x.
So...
15 * 2.5 = 37.5
The answer would be D!

Redanthrax answered Jun 10, 2018

6.7k points

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