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Question

The average 50 numbers is 30. If two numbers, 35 and 40 are discarded, then the average of the remaining numbers is nearly:

A
28.32
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B
28.78
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C
29.27
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D
29.68
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Solution

The correct option is D 29.68
Given
30=a1+a2+a3++a49+a5050
a49+a50=1500(a1+a2++a48)
Now, a49 & a50 is removed
Savg=a1+a2++a4848
=1500(35+40)48
=15007548
=142548
Savg=29.68

1074820_1183743_ans_d3e4f28708a14a94aebd51a44335b577.png

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