Question

Last year 80 kids signed up for a summer trip to Washington DC this year 65 kids have signed up what is the precent difference in the number of students going on the trip?

Answer 1

Recall that the percent difference is given by the following formula:

`P=\frac{|I_0-I|_{}}{(I+I_0)/(2)}*100,`

where I is the final value, and I₀ is the initial value.

In this case, I₀=80, and I=65, therefore:

`P=(80-65)/((80+65)/(2))*100.`

Simplifying the above calculations we get:

`P=(15)/((145)/(2))*100=(30)/(145)*100=(6)/(29)*100=(600)/(29)\text{.}`

Answer: 600/29%.