Can someone help me ? If Tina can type a paper in 5 hours and together she and Tyra can type the paper in 2 hours, how long would it take Tyra to type the same paper alone?

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asked Mar 7, 2021 71.0k views

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Yogesh Prajapati · Answer 1 · 2021-03-13T21:22:22+0000

Answer: 3 1/3 hours

Explanation:

Tina rate: 1/5 job/hr

Together rate: 1/2 job/hr

Tyra rate: 1/x job/hr

---------

Equation:

rate + rate = together rate

1/5 + 1/x = 1/2

2x + 10 = 5x

3x = 10

x = 3 1/3 hrs (time for Tyra to do the job alone)

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Can someone help me ? If Tina can type a paper in 5 hours and together she and Tyra can type the paper in 2 hours, how long would it take Tyra to type the same paper alone?

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