The average weight of 8 sailors in a boat is increased by 1 Kg if one of them weighing 56 Kg is replaced by a new sailor. The weight of the new sailor is:

57 Kg

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60 Kg

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64 Kg

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62 Kg

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None of these

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Solution

The correct option is C 64 Kg
The sailor weighing 56 Kg is replaced and the average is increased by 1 Kg. Hence, the weight of the new sailor is (56 + increase in total weight) $= 56 + 1 \times 8$
$= 56 + 8 = 64 K g$

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The average weight of 8 sailors in a boat is increased by 1 Kg if one of them weighing 56 Kg is replaced by a new sailor. The weight of the new sailor is:

The correct option is C 64 KgThe sailor weighing 56 Kg is replaced and the average is increased by 1 Kg. Hence, the weight of the new sailor is (56 + increase in total weight) =56+1×8 =56+8=64 Kg

The correct option is C 64 Kg
The sailor weighing 56 Kg is replaced and the average is increased by 1 Kg. Hence, the weight of the new sailor is (56 + increase in total weight) $= 56 + 1 \times 8$
$= 56 + 8 = 64 K g$