108 identical books have a mass of 30kg. Find
a) the mass of 150 such books,
b) the number of such books that have a mass of 20kg.
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Answer:
a) 270 kg
Step-by-step explanation:
a) mass of 1 identical book = 108/30 = 1.8 kg
then mass of 150 books is = 150 * 1.8 = 270 kg
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