Question

Robert's book bag is weighing him down. His bag alone weighs 4 pounds. His library book

weighs 2 pounds. The math book is 4 times the weight of the library book, and his science
book is 2 times the weight of the math book. How much does his book bag weigh with all
these books? What is the heaviest book in his book bag?

Answer 1

1) 30 pounds is the weight of the bag all together

2) science book is the heaviest book

Explanation:

bag=4 pounds

library book=2 pounds

maths book=2×4=8 pounds

science book=8×2=16 pounds

4+2+8+16=30 pounds all together

heaviest book= science book (16 pounds)

Answer 2

The weight of Robert's bag alone is 4 pounds.

The library book weighs 2 pounds.

The math book is 4 times the weight of the library book, so it weighs 4 * 2 = 8 pounds.

The science book is 2 times the weight of the math book, so it weighs 2 * 8 = 16 pounds.

To find the total weight of Robert's book bag, we add the weights of all the books and the bag:

4 pounds (bag) + 2 pounds (library book) + 8 pounds (math book) + 16 pounds (science book) = 30 pounds.

Therefore, Robert's book bag weighs 30 pounds with all these books.

To determine the heaviest book in his book bag, we compare the weights of the books:

The bag weighs 4 pounds.
The library book weighs 2 pounds.
The math book weighs 8 pounds.
The science book weighs 16 pounds.
From these options, the science book is the heaviest, weighing 16 pounds.