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Kevin stuffs shrimp in his job as a seafood chef. He can stuff 1200 shrimp in 4 hours. When his sister helps him, they can stuff 1200 shrimp in 3 hours. If kevin gets sick, how long will it take his sister to stuff 600 shrimp?

  • Algebra -

    consider 1200 shrimp One job.

    1/3 = 1/4 + 1/t
    t = 12
    so, sis can stuff 1200 shrimp in 12 hours.
    600 shrimp in 6 hours

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