Question

The average of 50 numbers is 38. If two numbers namely, 45 and 55 are discarded, the average of remaining numbers is:
1) 37
2) 36.5
3) 37.52
4) 37.5

Answer 1

Total of 50 numbers = 50*38 = 1900

Average of 48 numbers = 1900-(45+55)/48

=1800/48

=37.5

ANSWER: 37.5

Answer 2

Hey

Here is your answer,

Average of 50 numbers = 50 x 38 = 1900
Two numbers 45 and 55 are discarded = 45 + 55 = 100
Remaining average = 1900-100/48
= 1800/48
= 37.5

Option c is right .

Hope it helps you!