Question

A carpenter used 31 lb of nails for a job. After the job

was over, the remaining nails weighed 11 lb. How many pounds
of nails did the carpenter have at the beginning of the job?

Thanks!!

Answer 1

The carpenter had 4
`(1)/(4)` in the beginning

Before: x

Amount deducted: 3
`(3)/(16)`

After: 1
`(1)/(16)`

Equation:

x - 3
`(3)/(16)` = 1
`(1)/(16)`

x = 4
`(4)/(16)`

x = 4
`(1)/(4)`