a karate studio charges $35 for the first course and $22.50 for each course after that, even if the student…

a karate studio charges $35 for the first course and $22.50 for each course after that, even if the student leaves the course early. cena paid $170 for her son to take courses. how many courses did he take?\n6 courses\n7 courses\n8 courses\n10 courses

a karate studio charges $35 for the first course and $22.50 for each course after that, even if the student leaves the course early. cena paid $170 for her son to take courses. how many courses did he take?\n6 courses\n7 courses\n8 courses\n10 courses

Answer

Explanation:

Step1: Subtract first - course fee

Let the number of courses after the first one be $x$. First, subtract the cost of the first - course from the total amount paid. The amount paid for courses after the first one is $170 - 35=135$ dollars.

Step2: Calculate number of additional courses

Since each additional course costs $22.50$ dollars, we can find the number of additional courses $x$ by dividing the remaining amount by the cost per additional course. So, $x=\frac{135}{22.50}=6$.

Step3: Calculate total number of courses

The total number of courses is the first course plus the additional courses. So the total number of courses is $1 + 6=7$.

Answer:

7 courses