Question

three pipes a, b and C can fill a tank from empty to full in 30 minute 20 minute and 10 minute respectively. When the tank is empty all the three pipes are opened a b and c
discharge chemical solutions p q and R respectively what is the proportion of the solution R in the liquid in the tank after 3 minute

a) 5/11
b) 6/11
c) 7/11
d) 8/11
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Answer 1

Answer:

it's 7/11

Step-by-step explanation:

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