Select the correct answer. How does the US tax policy encourage long-term Investments?
OA by making long-term Investments tax exempt
OB. by making Treasury bonds tax exempt
Oc by making it illegal to earn short-term gains
OD. by providing a lower tax rate for long-term gains

Working alone at its constant rate, pump x pumped out ¼ of the water in a tank in 2 hours. then pumps y and z started working and the three pumps, working simultaneously at their respective constant rates, pumped out the rest of the water in 3 hours. if pump y, working alone at its constant rate, would have taken 18 hours to pump out the rest of the water, how many hours would it have taken pump z, working alone at its constant rate, to pump out all of the water that was pumped out of the tank? a) 6b) 12c) 15d) 18e) 24