Question

if the average of 4 number is 16 and 5 number is 18 find the 5th number​

Answer 1

Step-by-step explanation:

let the sum of 4no.s be y, 5th no. be x

ATQ,

16=y/4

y=64

and

18=y+x/5

18=(64+x)/5

(18*5)-64=x

90-64=x

x=26

Therefore the 5th no. is 26