Question

. In one Ivy Tech region the number of students in Math 136 is 20% more than the number of students in Math 123. If there are 480 students in Math 136, how many students are in Math 123?

Answer 1

Number of students in Math136 = 480

We are given that the number of students in Math136 is 20% more than the number of students in Math123. Let the number of students in Math123 be x. So we can set up the equation as:

Number of students in Math136 = 20% more than number of students in Math123

Number of students in Math136 = 20% more than x

480 = 20% more than x

480 = 20% of x + x

480 = 0.20x + x

480 = 1.20(x)

x = 480/1.20 = 400

This means, there are 400 students in Math123.