Question

the average of 7numbers is 5.if the first six number is 4
then find the 7number
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Answer 1

Answer:

let n = the 7th number

6*4+n/7=5

24 + n = 7 * 5

n = 35 - 24

n = 11 is the 7th number

Answer 2

Answer:

The average of 7 numbers is 5.

If the average of first six of these numbers is 4, the seventh number is?

let n = the 7th number

(6×4) + n /7 = 5

24 + n = 7 * 5

n = 35 - 24

n = 11 is the 7th number