A small train at an amusement park is carrying passengers. Half of the passengers are 4 years old, 110 are 5 years old, 310 are 6 years old, and 110 are 7 years old. What is the expected age for one of the passengers on the train?

5 years
6.1 years
5.5 years
6 years

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8