The average age of 8 people is 40. If the average age of the first 6 people is 35, then what is the average age of the last two people?

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Solution

Sum of ages of all the 8 people = 8 x 40 = 320.
The sum of ages of first 6 people = 6 x 35 = 210
Now , the sum of ages of last 2 people
= 320 – 210
= 110
So , the average age of last 2 people
= 110/2
= 55

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The average age of 8 people is 40. If the average age of the first 6 people is 35, then what is the average age of the last two people?

Sum of ages of all the 8 people = 8 x 40 = 320. The sum of ages of first 6 people = 6 x 35 = 210 Now , the sum of ages of last 2 people = 320 – 210 = 110 So , the average age of last 2 people = 110/2 = 55

Sum of ages of all the 8 people = 8 x 40 = 320.
The sum of ages of first 6 people = 6 x 35 = 210
Now , the sum of ages of last 2 people
= 320 – 210
= 110
So , the average age of last 2 people
= 110/2
= 55