Question

2. Kevin can complete a puzzle in 28 minutes. When his father helped him, they were
able to complete the same puzzle in 17 minutes. How long would it take for his father
to finish the puzzle on his own?

Answer 1

Answer:

Hello... 

Sally can paint a house in 4 hours; Which means in 1 hour she can paint 1/4th of the house.

John can paint the same house in 6 hours. Which means in 1 hour she can paint 1/6th of the house.

Together in 1 hour they can paint: - 1/4 + 1/6 = 5/12th of the house.

Total Hours for painting the house together will be 12/5 = 2.4 Hours.

Step-by-step explanation:

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