Question
The average weight of 6 employees in an office increases
by 3 kg when the boss is included. The sum of the average weight of the 6 employees and the boss's weight is 141 kg. Find the boss's weight..Solution
Let the average weight of 6 employees = x kg Total weight of 6 employees = 6x kg When boss is included then total weight of 7 members = 7×(x+3) = 7x+21 Weight of boss = 7x+21-6x = x+21 According to question- x+x+21 = 141 2x = 120 X = 60 Weight of boss = x+21 = 81 kg
Find the average of first 18 whole numbers.
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