SOLUTION: Professor Tsing meets five classes each day. One has 26 students, another has 33, and a fourth has 28 students. If this represents 78% of the students in her classes, what is the t

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: Professor Tsing meets five classes each day. One has 26 students, another has 33, and a fourth has 28 students. If this represents 78% of the students in her classes, what is the t      Log On


   

Question 176246This question is from textbook New Progress in Mathematics
: Professor Tsing meets five classes each day. One has 26 students, another has 33, and a fourth has 28 students. If this represents 78% of the students in her classes, what is the total number of students she teaches? This question is from textbook New Progress in Mathematics

Answer by agosset(4) About Me  (Show Source):
You can put this solution on YOUR website!
First we add all known classes:
26%2B33%2B28=87
This 87 represents 78% of all students
We want to find x that represents 100% of all students
We can write this relationship as:
87%2F78+=+x%2F100
We convert percentages to decimal values:
87%2F0.78+=+x%2F1
x=111.5
Number of total students = 112