Question

8. The average of three numbers is 24. If one of the numbers is 18 and the other number is 19, find the third number​

Answer 1

Answer:

Third number = 35.

Step-by-step explanation:

let first number= x

let second number = y

let third number = z

According to question average of three numbers = 24

x+y+z =24

3

x =18

y = 19

z=?

18+19+z =24

3

18+19+z = 24×3

18+19+z = 72

37+z =72

z= 72-37

z= 35.

Answer 2

Answer:

35

Step-by-step explanation:

Average of three numbers = 24

Let, a, b and c be the three numbers.

$\frac{a + b + c}{3}$ = 24

Given,

a = 18 ;

b = 19 ;

c = to find.

Then,

$\frac{18+19+c}{3}$ = 24

18 + 19 + c = 24 × 3

37 + c = 72

c = 72 - 37

c = 35

Therefore, the third number is 35.

HOPE THIS HELPS YOU!