1 point 4.) A large aquarium should contain 10,000 liters of water when it is filled
correctly. It will overflow if it gets up to 12,000 liters. The fish will get sick if
it gets down to 4,000 liters. The aquarium has an automatic system to help
keep the correct water level. If the water level is too low, a faucet fills it. If
the water level is too high, a drain opens. One day, the system stops
working correctly. The drain opens draining the water at a rate of 20 liters
per minute. How many minutes will it take before the fish start to get sick?