For the following questions answer them individually
Pipes A and B can fill a tank in 8 hours and 12 hours, respectively. C is an outlet pipe. When all the three are opened together, the tank is filled in $$13\frac{1}{3}$$ hours. C alone can empty the full tank in:
84 persons take 56 days to complete a ce11ain task. When one-fou11h of the task was completed, one-seventh of the workers left. How many days in all does it take to complete the entire task?
When an a1ticle is sold for ₹68, the profit percentage is x%. When the same ai1icle is sold for ₹896, the profit percentage is $$(x + 20)$$ %. What is the value of x?
A 270-m-long train takes 24 seconds to cross a pole. If it takes 1 minute to cross a tunnel, then the length (in m) of the tunnel is:
