Question

If x varies directly as you and x=7 when y=28, find x when you is 84.

please solve the question ​

Answer 1

Answer:

it's 21.

Step-by-step explanation:

Because in first condition y is 4* of x.

7*4=28.

now

in second

y =84

x*4=84

x=84/4

hence x=21.