The weight of 72 books is 9 kg.
(i) What is the weight of 80 such books?
(ii) How many such books weigh 6 kg?
(please help me)
Answers
Answered by
1
Step-by-step explanation:
(I)
Answered by
5
As given 72 books weigh 9kg.
Then find the average weight of a book.
= Total weight/Total books
= 9/72
= 1/8 kg or 0.125 kg
Hence weight of a single book is 0.125kg.
(a) Weight of 80 books = 80 × weight of single book
= 80 × 0.125
= 10 kg
(b) No. of books weighing 6 kg = 6 kg ÷ Weight of single book
= 6 ÷ 0.125
= 48 books.
Similar questions
Physics,
3 hours ago
Environmental Sciences,
3 hours ago
Physics,
5 hours ago
Chemistry,
7 months ago
Math,
7 months ago