Question

6. The average of three numbers is 8. The first two numbers are 5 and 12. Find
the third number.

(B) 7 (C) 8
(A) 6
(D) 8.5​

Answer 1

Answer:

6

Step-by-step explanation:

The sum of the numbers will be 8*3=24. 11+7=18 and 24-18=6. So the last number is 6. The average of 6, 7, 11 is 8. So the third number is 6.

Answer 2

Answer:

b) 7

Step-by-step explanation:

for any 3 number avg u must divide sum/3

so,

5+12=17 ;17/3 is not equal to 8

so 8×3=24

5+7+12=24; 24÷3=8