Question
Average of 10 quantities is 35. If two extra quantities are
added whose average is 'x', the new average rises by 10%. Find the value of 'x'.Solution
ATQ,
Sum of 10 quantities = 10 × 35 = 350
New average of all the numbers = 35 × 1.1 = 38.5
So, sum of 12 numbers = 38.5 × 12 = 462
So, average of two new numbers = (462 - 350) ÷ 2 = 56
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