1st tap fill the tank in 7 minutes.2nd tap fill in 8 minutes. Tap 1st begin the work and they are working alternatively, hiw long the tank will take to be filled?
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Answer:
3 11/15 min
Step-by-step explanation:
1st tap work for 1/7 min
2nd tap work for 1/8 min
both working simultaneously
1/7+1/8=15/56
=3 11/15 min
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