A+B can fill the tank in 60 min and B+C fill the tank in 40 mins and A+C fill the tank in 30 mins. How much time will A alone take to fil the tank
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Answer:
50
Step-by-step explanation:
(A+B=60)_(B+C=40)
(A-C=20)+(A+C=30)
A=20+30
A=50
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