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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

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
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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

User Totic
by
8.9k points

2 Answers

4 votes
2/5 = 15/x

cross multiply
x =6

User Hdk
by
7.4k 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!
User Redanthrax
by
8.4k points
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