Work Problems

Question 1

Rate formula for work

Answer 1

rate = work/ time

Question 2

what you must know about combined worker problems?

Answer 2

work obj1 + work obj2 = work total

Question 3

when two objects work together for the same amount of time, what you can infer?

Answer 3

they have started the work together and ended it together. so their work time is equal

Question 4

when two objects begin a job together, but an object stops before completion, what you can infer about their work?

Answer 4

together work = x. remaining work that needs be completed by object that didn’t leave = 1-x

Question 5

percent of a job done and fraction of a job done

Answer 5

percent = object work/ total objects work * 100, fraction = object work / total objects work

Question 6

what you can infer about opposing worker problems rates?

Answer 6

rate obj 1 - rate obj 2 = rate of both

Question 6

what you can infer about opposing worker problems rates?

Answer 6

rate obj 1 - rate obj 2 = rate of both

Question 7

Change in workers problem formula?

Answer 7

workers/ rate of workers = # new workers / rate of new workers