Ian filled a tank with water using two taps. He turned on Tap H first and after 5 minutes, he also turned on Tap J. Both taps were turned off at the same time when the tank was completely filled without overflowing. The graph shows the amount of water in the tank over 16 minutes.
- What fraction of the tank was filled 5 minutes after Tap H was turned on? Express your answer in the simplest form.
- In one minute, how many litres of water flowed from Tap J?