The answer is 6.89 because
6.89+14.52=21.41
So 21.41+(-14.52)=6.89
5000 pounds is equal to 2.5 tons because 1 ton is equal to 2000 pounds
9 1/7 lb
You can convert the mixed numbers to solve it easier! :)
The plumber worked for 5 hours because 450-200=250 which gets rid of the initial fee so 250 divided by 50 is 5