gary bought 2lbs of nails for a project. he already had 0.75 lbs. if he uses 1 2/5 lbs of nails, how many lbs of nails does he left ?

Answer 1

To find out how many pounds of nails Gary has left, we need to add up the pounds of nails he already had and subtract the pounds of nails he used for the project.

Gary already had 0.75 lbs of nails.
He bought an additional 2 lbs of nails.
The total pounds of nails he had was 0.75 + 2 = <<0.75+2=2.75>>2.75 lbs.

Now, he used 1 2/5 lbs = 5/5 + 2/5 = 7/5 lbs of nails.

To find out how many pounds of nails Gary has left, we subtract 7/5 from 2.75:
2.75 - 7/5 = 11/4 - 7/5

To subtract fractions with different denominators, we need to find a common denominator. In this case, the common denominator is 20:
11/4 = 11/4 * 5/5 = 55/20
7/5 = 7/5 * 4/4 = 28/20

Now we subtract the numerators:
55/20 - 28/20 = (55 - 28)/20 = 27/20

So, Gary has 27/20 lbs of nails left.