Elsa cultivates the garden for 12 hours. Sisa can cultivate the garden by herself for 6 hours and Rica can do it in 4 hours. How long will it take them to cultivate the garden if they work together ko
Answer:
If Elsa can cultivate the garden for 12 hours, her work rate is 1/12 of the garden per hour.
If Sisa can cultivate the garden by herself for 6 hours, her work rate is 1/6 of the garden per hour.
If Rica can cultivate the garden by herself for 4 hours, her work rate is 1/4 of the garden per hour.
When they work together, their combined work rate is 1/12 + 1/6 + 1/4 = 1/12 + 2/12 + 3/12 = 6/12 = 1/2.
Therefore, they will take 1/ (1/2) = <<1/(1/2)=2>>2 hours to cultivate the garden together. Answer: \boxed{2}.
Step-by-step explanation:
Therefore, they will take 1/ (1/2) = <<1/(1/2)=2>>2 hours to cultivate the garden together. Answer: \boxed{2}.
