A completes a job in 20 min and B in 30 mins, if they do the same job together how much time will they take?
Answers
Answered by
4
Step-by-step explanation:
Amount of work done by A in 1 minute= 1/20
Amount of work done by B in 1 minute= 1/30
Total work done by A and B together in 1 minute= (1/20) +(1/30)= 5/60
Therefore,
Time taken by A and B together to finish the work together = 60/5= 12 minutes
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Answered by
0
Answer:25 MINUTES
Step-by-step explanation:
A DO FOR 20/2
=10
B DO FOR 30/2=15
A+B=10+15
=25
HENCE PROVED
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