Question

The value of y varies directly with x. when y = 25 x = 3/4. what is the value of y when x is 4 7/8

Answer 1

y = 161
`(1)/(2\\)`

Explanation:

You can make this more visually understandable first:

y = 25 = ?

x = 3/4 = 4
`(7)/(8)`

The change from 3/4 to 4 7/8 is 13/2, so the change between 25 and ? must be 13/2 as well.

25 * 13/2 = 325/2

= 162 1/2