Answer:
5 1/4
Explanation:
Joaquin needs twelve and one-half feet of floor trim to go around the inside of a closet.
This is written Mathematically as: 12 1/2 feet
He has one piece of trim that is three and three-fourths feet
= 3 3/4 feet
Another piece of trim that is three and one-half feet.
= 3 1/2 feet
How many more feet of trim does Joaquin need for the closet?
This is calculated as the:
Total number of feet of trim he needs - sum of (3 3/4 + 3 1/2)
12 1/2 - [ 3 3/4 + 3 1/2]
12 1/2 - [ 3 + 3 + (3/4 + 1/2)]
12 1/2 - [ 6 + ( 3 + 2/4)]
12 1/2 - [ 6 + 5/4]
12 1/2 - [ 6 + 1 1/4]
12 1/2 - [ 7 1/4]
12 - 7 + ( 1/2 - 1/4)
5 + ( 2 - 1/4)
5 + 1/4
= 5 1/4
Hence, Joaquin need 5 1/4 more feet of trim