SOLUTION: A number of students charter a bus to go to wonderland for a school trip, which costs them a total of $80 (for the bus). However, at the last minute eight of the students cannot go

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: A number of students charter a bus to go to wonderland for a school trip, which costs them a total of $80 (for the bus). However, at the last minute eight of the students cannot go      Log On


   

Question 950555: A number of students charter a bus to go to wonderland for a school trip, which costs them a total of $80 (for the bus). However, at the last minute eight of the students cannot go. In order to make up the difference, the remaining students have to chip in an extra 50 cents. How many students end up going on the bus?
let x be the remaining students
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
p for how many PUPILS, or students, initially planned.
p-8 actually did go on the trip.

80%2Fp dollars per student was the needed PRICE to pay for the bus.

Now 0.50 dollar per student MORE must be paid from p-8 students.
New price is %2880%2Fp%2B0.5%29;
How many students now, p-8;
Same COST as before.

highlight%28%2880%2Fp%2B0.5%29%28p-8%29=80%29.
When this equation and analysis leading to it make sense, then that is the help you needed. (Solve for p, and then evaluate p-8).