Question

ome friends are going on a coaster ride at an amusement park. They board their car on a platform that is 10 and one half feet above the ground. The car starts by going up 80 and one half feet. Then the car goes down 50 and one fourth feet and comes to a stop. What is the change in height from where the friends started on the platform to where they are when the car​ stops?

Answer 1

Answer: The change in height is 30 1/4 feet.

Solution:

Change in height: h=?

The car starts by going up 80 and one half feet:

h=+80 1/2 feet

Then the car goes down 50 and one fourth feet:

h=80 1/2 feet - 50 1/4 feet

h=80 2/4 feet - 50 1/4 feet

h= 80-50 2/4-1/4 feet

h=30 (2-1)/4 feet

h=30 1/4 feet