The average mass of three friends is 36kg. If their masses are 3 consecutive numbers, what is the mass of the lightest person?
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Answer:
The weight of the lightest person is 35kg.
Step-by-step explanation:
It has been mentioned here that the respective average mass of the three friends is 36 kg. The masses of the three friends are consecutively 3 numbers. Let us assume the three masses to be n, n+1, and n+2 kg.
Therefore we have the average of the three weights to be:
Average = sum of all the weights / total number of friends
∴ 36 =
⇒ 36 =
⇒ 36 =
⇒ 36 = n + 1
⇒ 36 -1 = n
⇒ n = 35
Therefore the weights of the following three friends are 35, 36, and 37 kg respectively. The weight of the lightest person is 35 kg.
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