Question

The average of three numbers is 36. The average of two of these numbers is 48. What is the third number?
Plz reply As soon as possible

Answer 1

Solution :-

Average of three numbers = 36

Then, sum of these three numbers = 3*36

= 108

Average of two of these numbers = 48

Then, sum of these two numbers = 2*48

= 96

Then, the third number = 108 - 96

= 12

Hence, the third number is 12

Answer.

Answer 2

Average= sum of observations/number of observations

Sum of observation= average ×number of observations

Given:

average of 3 no.=36
average of 2 of no.= 48.

Sum of 3 numbers=36×3= 108

Sum of 2 numbers= 48 × 2= 96

Third number= sum of three numbers - sum of two numbers

Third Number= 108 - 96

Third Number= 12

Hence, The Third Number= 12

Hope this will help you....