It takes Tim 4 hours to clean a house and it takes 3 hours for Amanda to do the same job. How long will it take for both of them to clean the house together?

1  5/7 hours

≈ 1 h 43 m

Tim 4 hours => 1 hours = 1/4 house

Amanda 3 hours => 1 hours = 1/3 house

Both 1 hour = ³⁾1/4 + ⁴⁾1/3 = (3+4)/12 = 7/12 house

How long will it take for both of them to clean the house together ?

12/12 (full house) : 7/12 =

= 12/12 ₓ 12/7

= 12/7 hours

= 1  5/7 hours

≈ 1 h 43 m

37

step-by-step explanation:

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