Given:
Total amount Jose has = $75
Registration fee = $15
Additional fee = $6 for each class
To find:
Number of classes that Jose can afford.
Solution:
Let x be the number of classes that Jose can afford.
Additional fee for 1 class = $6
Additional fee for x classes = $6x
Total fee = Registration fee + Additional fee for x classes
Divide both sides by 6.
Therefore, the required equation is
and the number of classes he can afford is 10.