SOLUTION: Kevin stuffs shrimp in his job as a seafood chef. He can stuff 1,200 shrimp in 4 hours. When his sister helps him, they can stuff 1,200 shrimp in 3 hours. If Kevin gets sick, how l

Question 1121633: Kevin stuffs shrimp in his job as a seafood chef. He can stuff 1,200 shrimp in 4 hours. When his sister helps him, they can stuff 1,200 shrimp in 3 hours. If Kevin gets sick, how long will it take his sister to stuff 600 shrimp?
Answer by ikleyn(52797) (Show Source): You can put this solution on YOUR website!
.

Working alone, Kevin stuffs   = 300  shrimps per hour.


Working with the sister, they both stuff   = 400  shrimps per hour.


Hence, the sister stuffs  400 - 300 = 100  shrimps per hour.


It means that the sister can stuff 600 shrimps in   = 6 hours.

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