Question

a backpack weighed 28 pounds. If you take out a textbook that weighs 6 pounds and 3 ounces, how much will the backpack weigh

Answer 1

21 pounds and 13 ounces is the correct answer 

Answer 2

Explanation:

Given : The weight of bag pack = 28 pounds

We know that 1 pound = 16 ounces

Then
`28\text{ pounds}=28*16\ \text{ounces}=448 \text{ounces}`

Also, the weight of textbook = 6 pounds and 3 ounces

Now,
`6\text{ pounds}=6*16\ \text{ounces}=96 \text{ounces}`

Then, the weight of textbook = 96 ounces +3 ounces = 99 ounces

So, if we take out the textbook, then the weight of bag pack =
`448-99=349\text{ounces}`

In pounds, the weight of bag pack will be 21 pounds and 13 ounces. [divide 349 by 16]