The mass of three boys is 162kg. The average of two of them is 57kg. Find the mass of the third boy.
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Solution :
Total mass of three boys ( M ) = 162 kg
Average of two of them = 57 kg
Total mass of two of them ( m )
= 2 * 57 kg
= 114 kg
Thus, the mass of the third boy
= M - m kg
= 162 - 114 kg
= 48 kg
Total mass of three boys ( M ) = 162 kg
Average of two of them = 57 kg
Total mass of two of them ( m )
= 2 * 57 kg
= 114 kg
Thus, the mass of the third boy
= M - m kg
= 162 - 114 kg
= 48 kg
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