Bunuel wrote:
If 50 apprentices can finish a job in 4 hours and 30 skilled workers can finish the same job in 9/2 hours, how much of the job should be completed by 10 apprentices and 15 skilled workers in 1 hour?
(A) 1/9
(B) 29/180
(C) 26/143
(D) 1/5
(E) 39/121
Another way. Looks long. It isn't. Under 1:30
Find the rate of an individual apprentice and an individual skilled worker. Use that rate to figure out how much work gets finished when the number of workers change. (Just add # to the left side of the
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