# In one 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 Maths 136, how many students are in Math 123?

In one 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 Maths 136, how many students are in Math 123?
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Step 1
Acording to the given information,
Let the number of students in math123 be ‘x’
So, according to question in math136 there are 20% more students than math 123.
Number of students in math $136=480$
$480=\frac{20}{100}x+x$
Step 2
Now solve the above equation.
$480=\frac{20}{100}x+x$
$480=\frac{120x}{100}$
$\frac{480\left(100\right)}{120}=x$
$400=x$
Therefore, number of students in math123 are 400.