If Laura rolls a number cube 90 times, how many times should she expect it to land on a number less than 3?

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?