Answer: 1.135 L/s; 1.35 kg/s, 22.57 m/s
Explanation:
Given
Volume of bucket 
time to fill it 
Volume flow rate

The inner diameter of the hose 
diameter of the nozzle exit 
we can volume flow rate as

Mass flow rate

Answer: They are identical brightness
Explanation:
If the lights are assumed to be resistance bulbs
Each light has the same current and will each drop one third of the supply voltage.