Question

The average of 5 number is 39.20. If the average of 3 of them be 41.00. What is the average of remaining two numbers

Answer 1

Answer:

The average of the remaining two numbers = 36.50

Step-by-step explanation:

In general,

    Average = Sum of all observations / No. of observations

=> Sum of all observations = Average * No. of observations

Average of 5 numbers = 39.20

=> Sum of five numbers = 39.20 * 5 = 196 ......(i)

Average of 3 numbers = 41.00

=> Sum of three numbers = 41.00 * 3 =   123 ...(ii)

Clearly, sum of remaining two numbers =

Sum of five numbers - Sum of three numbers

Using (i) and (ii), sum of remaining two numbers = 196 - 123

                                                                                = 73

=> Average of remaining two numbers = 73/2 = 36.50