Question
There are ten numbers such that the average of the first
three numbers is 15 and the average of the last five numbers is 22. If the average of the fourth and fifth number is 17, then find the average of all the numbers.Solution
ATQ,
Average of all the 10 numbers = {(3 × 15) + (5 × 22) + (2 × 17)/10}
= {(45 + 110 + 34)/10} = 189/10 = 18.9
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