How do you work out the average of two numbers

Asked by admin @ 29/10/2021 in Mathematics viewed by 268 People

The average of two numbers is 11. the difference between is 4 , find the sum of the two numbers

please help

Answered by admin @ 29/10/2021

Answer:

Step-by-step explanation:

Let the first number be x.

Let the second number be y.

(x+y)/2 = 11

x-y=4

Solve for x in the second equation.

x = 4 + y

Put x as 4 + y in the first equation and solve for y.

(4+y+y)/2 = 11

4 + 2y = 22

2y = 18

y = 9

Put y as 9 in the second equation and solve for x.

x = 4 + 9

x = 13

Find the sum of the numbers x and y.

x + y

13 + 9

= 22

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