Question

If x varies directly as Y and X=7 when Y =28.Find X when Y is 84.​

Answer 1

Answer:

if x varies directly as y then

7:28::x:84

84*7=28x ( product of means equals the product of extremes)

x=84*7/28

x=21

Answer 2

Answer:

The value of x is 21 .

Step-by-step explanation:

We are given that x varies directly as y

--- A

We are given that x = 7 and y = 28

Substitute the values in A

7 = 28k

Now equations becomes :

y = 84

Hence The value of x is 21 .

refer attachment for mid solution