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Question
Solve the following numerical problem.
The masses of five marbles are 50 g, 55 g, 60 g, 65 g, and 70 g. Find their average mass.
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Solution
The sum of masses of all marbles
= 50 g + 55 g + 60 g + 65 g + 70 g = 300 g
Number of marbles = 5
Average mass of a marble = sum of mass / no. of marbles
= 300 / 5 g
= 60 g
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