1.

The average weight of 21 boys was recorded as 64 kg. If the weight of the teacher was added, the average increased by 1 Kg. What was the teacher's weight?(Please explain in steps)Thankyou!

Answer»

ANSWER: 86 KG

step by step explanation:Here, n = 21, a = 64, b = 65

Weight of TEACHER = n (b - a) + b

= 21 (65 - 64) + 65 = 21 + 65 = 86 kg

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