Question

108 identical books have a mass of 30 kg.Find

the mass of 150 such books
the number of such books that have mass of 20 kg

Answer 1

41.67 kg

72 books

Explanation:

mass of 150 books = 150/108 × 30 kg

= 41.67 kg

number of books = 20/30 × 108 books

= 72 books