Question: In Mariam's neighborhood, there are 40 houses on one side of the main road passing through the neighborhood and three times as many homes on the other side of the road. How many homes are in Mariam's neighborhood? Think carefully first, then make a decision:
If the number of homes on one side of the main road is three times the number on the other side, there are 3 * 40 = 120 homes. In total, there are 40 + 120 = 160 homes in Mariam's neighborhood. So the answer is 160.