1. The average weight of 21 girls was recorded as 58 kgs. If the teacher’s weight was added, the average increased by one. What was the teacher’s weight ?
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By: anil on 05 May 2019 01.19 am
The average weight of 21 girls was recorded as 58 kgs Hence sum of the weight of the girls = $$ 21 imes 58$$ If the teacher’s weight was added, the average increased by one.
Hence sum of the weight of the girls and the teacher = $$ 22 imes 59$$ Hence weight of the teacher =( $$ 22 imes 59$$) - ($$ 21 imes 58$$) = 80kg
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Hence sum of the weight of the girls and the teacher = $$ 22 imes 59$$ Hence weight of the teacher =( $$ 22 imes 59$$) - ($$ 21 imes 58$$) = 80kg