If x varies directly as y, and x=24 when y=8, find x when y=10

when y= 10 x=30

How is it x= 30 you may ask?

x varies directly as y. This means that:

(x/y) is a constant. Let us call this constant as "k". i.e: x/y=k

for the first one which is x=24 y= 8

24/8= 3

BUT... about y=10?

for y= 10 its the same rule x/y= k in this case we already found K which is 3

*we don't have x so we cant divide anything however we do have  "k" and y so all we have to is multiply so its 10*3= 30*

And that's how x= 30 when y= 10

answer: procent 54 wynosi 33,33%