Weekend Pay Problem

This is a post based on a question.

javis works in a garage for 8 hours. if he works on saturday he is paid time and a quater, if he works on sunday he is paid time and a half. last week-end javis for four hours on saturday and 4 hours on sunday. how much is he paid last week-end

NOTE- time and a half means for every hour you work you get paid for one and a half hours.

Let's look at a chart that will help with this problem:

We can also do the problem using a more algebraic approach: