8. There are 12 students and 1 boatman in a boat
The average weight of all 13 people is 25.0 kg
The average weight of the students is 23.5 kg
What is the weight of the boatman?
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Answer:
The correct answer is 43kg.
Step-by-step explanation:
Average weight of 13 people = Total Weight of all 13 people ÷13
Total weight of 13 people = 25×13= 325kg
Avg weight of 12 = Total weight of 12 students ÷ 23.5
Total weight of 12 students =23.5×12=282
Weight of Boatman =325-282=43kg
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