Question

If y is 2.5 when x is 5 and y varies directly with x, find y when x is 10.

Answer 1

Y=2.5 when X=5
Y=5 when X=10

Basically 10÷5=2 so 2.5×2=5

Answer 2

Answer:

The value of y is 5.

Step-by-step explanation:

We have been given that y varies directly with x. Thus, we have

$y=kx$

Now, y is 2.5 when x is 5. Thus, we have

$2.5=k(5)$

Divide both sides by 5, we get

$k=0.5$

Now, we have to find y when x is 10.

$y=0.5\times10\\\\y=5$

Therefore, the value of y is 5.