Asked by Ted
A group of students have volunteered for the student council car wash. Janet can wash a car in m minutes. Rodrigs can wash a car in m-5 minutes, while Nick needs the same amount of time as Janet.If they all work together, they can wash a car in about 3.23 minutes. How long does Janet take to wash a car?
pls help. I tried it couple of times but did not get the answer.
pls help. I tried it couple of times but did not get the answer.
Answers
Answered by
Praphul
m+m+m-5=3.23
3m=8.23
m= 8.23/3
3m=8.23
m= 8.23/3
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