Arthur D. answered • 11/06/14

Effective Mathematics Tutor

x=# of students less that you have this year

(350-x) is the number of students you have this year and 350 is the number of students you had last year

to find the percent of decrease, you subtract this year's total from last year's total and put that over last year's total

[350-(350-x)]/350

[350-350+x]/350

x/350=the percent of decrease which you state is 36%

x/350=36/100

you can simplify before you cross multiply if you want to (x/350=9/25)

if not, 100x=36*350

100x=12,600

x=12,600/100

x=126 less students

350-126=224 students this year

Simply speaking, x, the number of students less this year is 36% of 350.

x/350=36/100 again