Richard works at an ice cream shop. regular cones get two scoops of ice cream; large cones get three scoops. one hot saturday, richard scooped 234 regular cones and 156 large cones. one scoop of ice cream is 3 ounces. a tub of ice cream weighs 10 pounds. how many tubs of ice cream did richard use to make the cones?

Ok so you are dealing with 3 different units here, cones, ounces and pounds.

First you want to get your cones into ounces so let's start with regular. One scoop is 3 ounces and regular cones have two scoops so the amount of ice cream per regular cone is the 3 ounces x the 2 scoops making 6 ounces per cone.

Now you want to take that 6 and multiply it by the amount of regular cones sold which is 234. 234 x 6 comes out to be 1404 ounces total. This number is important as it will be used later.

The next step is to repeat the process with the large cones (each cone's ice cream this time being 9 which comes out to the same total of 1404).

Now take both of the numbers and add them together to get your total ice cream in ounces. 1404+1404=2808.

Now you need to convert that to pounds. The formula is 1 pound = 16 ounces so once you convert it you will get 175.5 pounds of ice cream sold.

Now you need to divide that number by 10 to get the number of tubs coming out to s final answer of 17.55 tubs.