Question

At Brown Elementary School, 80% of all fifth graders ride the bus to school. If 124 fifth graders ride the bus to school, how many fifth graders are there at the school?

Answer 1

124/x = 80/100
80x = (124x100)

Answer 2

Answer: The total number of fifth graders in the school is 155.

Step-by-step explanation: Given that at Brown Elementary School, 80% of all fifth graders ride the bus to school.

If 124 fifth graders ride the bus to school, we are to find the number of fifth graders in the the school.

Let, 'n' be the total number of fifth graders in the school.

Then, according to the given information, we have

`80\%* n=124\\\\\\\Rightarrow (80)/(100)* n=124\\\\\\\Rightarrow (4)/(5)n=124\\\\\\\Rightarrow n=(124* 5)/(4)\\\\\\\Rightarrow n=31*5\\\\\Rightarrow n=155.`

Thus, the total number of fifth graders in the school is 155.