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The average of 50 numbers is 30. If two numbers, 35 and 40 are discarded, then the average of the remaining numbers is nearly:
Answer & Solution
Correct Answer:
Option
B
Total sum of 48 numbers, = (50 × 30) – (35 +40) = 1500 – 75 = 1425 Average = $$\frac{{1425}}{{48}}$$ = 29.68
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Loginlet the sum of remaining numbers is x, then
the average is (x+35+40) /50=30
=>x/50+75/50=30
=>x/50=30-75/50
but i m getting wrong answer,why?
please explain
50-2=48