Question

If Naomi were to paint her living room alone, it would take 7 hours. Her sister Colleen could do the job in 8 hours. How many hours would it take them working

together? Express your answer as a fraction reduced to lowest terms, if needed.

Answer 1

Answer: 3.23

Explanation:

Add 1/6 + 1/7 = 13/42 Take the reciprocal = 42/13 hrs ≈ 3.23 hrs