Question

If 20x + 20y = 70. what is the average of x and y?

Answer 1

↑ Here is your answer ↓
_____________________________________________________________
_____________________________________________________________

$20x + 20y = 70$

Divide throughout by 20,

$x + y = 3.5$

To find average, divide by two.

$\frac{x+y}{2} = \frac{3.5}{2}$

$\frac{3.5}{2} = 1.75$
____________________________________________________________________________________________________________________________

Glad to help you.
@EmadAhamed

Answer 2

20x + 20y = 70

Taking common,

20(x+y) =70

x+y =70/20

x+y = 7/2 = 3.5


Now,

As we know that

Average =(sum of quantity)/( no. of quantity)

Here,

Average = (x+y)/2

Average = 3.5/2

Average = 35/20 = 7/4 = 1.75


Average = 1.75



I hope this will help you


-by ABHAY