a green pipe can empty a tank in 8 hours, while a blue pipe can fill it in 3 hours. if the tank is initially half filled and blue pipe is opened in it, how many green pipes are required to be opened in it to empty the tank in 12 hours.
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Answer:
sfftegvhhjhvcssvj
Step-by-step explanation:
gdgbbjvbnkoecvvvbjjhvvzzcblltdxbnjhfxcvvmmmmbvccccvvvvnnkll
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