Alice and Bill live at opposite ends of the same street. They leave their houses at the same time and each walk, at constant speed, from their house to the other house and back. The first time they meet, they are 400 yards
from Alice's house, and the second time they meet, they are 300 yards from Bill's house. Both times they aretraveling in opposite directions. What is the distance, in yards, between the two houses?

How do you divide 9/4 divided by 10/3

What is the missing step in this proof ?

The avenues in a particular city run north to south and are numbered consecutively with 1st avenue at the western border of the city. the streets in the city run east to west and are numbered consecutively with 1st street at the southern border of the city. for a festival, the city is not allowing cars to park in a rectangular region bordered by 5th avenue to the west. 9th avenue to the east, 4th street to the south, and 6th street to the north. if x is the avenue number and yis the street number, which of the following systems describes the region in which cars are not allowed to park? 5th ave 9th ave