Question

The average of 60 numbers is 50. The average of 45 numbers out of the 60 is 42. What
is the average of the rest of the numbers?​

Answer 1

Answer:

50 - 42 = 8

Step-by-step explanation:

Acc. to question given that,

Avj60 = 50 & Avj45 = 42

So, Avj of rest nos. = 50 - 42 = 8

Answer 2

SOLUTION

GIVEN

• The average of 60 numbers is 50.

• The average of 45 numbers out of the 60 is 42.

TO DETERMINE

The average of the rest of the numbers

EVALUATION

Here it is given that the average of 60 numbers is 50

∴ Sum of 60 numbers

= 50 × 60

= 300

Again the average of 45 numbers out of the 60 is 42

∴ Sum of 45 numbers

= 45 × 42

= 1890

Total numbers left = 60 - 45 = 15

Sum of the 15 numbers

= 3000 - 1890

= 1110

Hence the required average

$\sf \: = \dfrac{1110}{15}$

$\sf \: = 74$

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