Asked by Anonymous
One person can complete a task in 3 minutes. A second person can complete the same task in 5 minutes. How long will it take to complete the task of the two people work together?
Answers
Answered by
Kalie
It would take 2 minutes to complete the task with two people. All you have to do is subtract.
Answered by
Neil
I doubt it. Set 3 and 5 into a fraction, like t / 3 + t / 5 = 1.
Multiply the denominator, to give you 15.
You'll be left with 5t + 3t = 15
8t = 15
8t / 8 = 15 / 8
t = 1.875
= 1.9 min., or 1 min. and 55 seconds
Multiply the denominator, to give you 15.
You'll be left with 5t + 3t = 15
8t = 15
8t / 8 = 15 / 8
t = 1.875
= 1.9 min., or 1 min. and 55 seconds
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