Dan is cutting 4.75 foot lengths of twine from a 240 foot spool of twine. he needs to cut 42 lengths, and says that 40.5 feet of twine will remain. show that this is reasonable

To find the ammount of twine left we subtract (twine used) from (total twine) or (total twine)-(twine used)=ammount left

so he must cut 42 legnths of rope  each legnth is 4.75 and this is taken from a
total legnth of 240 so
240-42(4.75)=amount left
42 trimes 4.75=199.5
240-199.5=40.5 left