Elijah drove 45 miles to his job in an hour and ten minutes in the morning. on the way home: however, traffic was much heavier and the same trip took an hour and half. what was his average speed in miles per hour for the round trip?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?