Question 262209
jeff completes 4 in 11 minutes
dana completes 7 in 25 minutes.


jeff takes 11/4 = 2.75 minutes to complete 1 problem.


dana takes 25/7 = 3.57 minutes to complete 1 problem.


jeff is faster.


you are correct.


another way of looking at is rate * time = units produced.


with jeff, you get r * 11 = 4


with dana, you get 4 * 25 = 7


jeff's rate is 4/11 = .36 problems per minute.


dana's rate is 7/25 = .28 problems per minute.


jeff's rate per minute is higher than dana's.


jeff is faster.