The value of y varies directly with x. When x=16, y=12.8. What is the value of y when x=24?

Answer 1

To find the value of y when x = 24, you can set up a proportion using the given information.

Since the value of y varies directly with x, you can set up the proportion as:

y1/x1 = y2/x2

Plugging in the values we have:

12.8/16 = y/24

Cross multiplying gives:

12.8*24 = 16*y

307.2 = 16y

Divide both sides by 16 to solve for y:

y = 19.2

Therefore, the value of y when x = 24 is 19.2.