Last week Fred had 33 dollars and Jason had 95 dollars. Over the weekend Fred delivered newspapers earning 16 dollars and washed cars earning 74 dollars. How much money did Fred earn over the weekend?
First, we need to find out how much money Fred had at the beginning of the weekend. We know that he had 33 dollars last week, and that he earned 16 dollars and 74 dollars over the weekend. So we can say that:

Fred had 33 dollars last week.
He earned 16 dollars over the weekend.
He earned 74 dollars over the weekend.

Now we need to find out how much money Fred had at the end of the weekend. We can do this by adding up all the money he had at the beginning of the weekend, and all the money he earned over the weekend. So we can say that:

Fred had 33 dollars at the beginning of the weekend.
He earned 16 dollars over the weekend.
He earned 74 dollars over the weekend.

Therefore, Fred had 33 + 16 + 74 = 123 dollars at the end of the weekend.