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, so we can say that he had 33 dollars at the beginning of the weekend. 

Next, we need to find out how much money Fred earned by delivering newspapers. We know that he earned 16 dollars, so we can say that he earned 16 dollars by delivering newspapers. 

Now, we need to find out how much money Fred earned by washing cars. We know that he earned 74 dollars, so we can say that he earned 74 dollars by washing cars. 

Finally, we need to find out how much money Fred earned over the weekend. We know that he earned 16 dollars by delivering newspapers and 74 dollars by washing cars, so we can say that he earned 90 dollars over the weekend. 

Therefore the answer (numeric) is: 

90