Can someone help me with this word problem? I will mark anyone that offers me a useful answer the most brainiest!

I know that you have to split up the money between the 3 based on how much work they have done, but I don't understand how to do that...

Please don't answer this unless you actually understand!! Thanks! :)

Can someone help me with this word problem I will mark anyone that offers me a useful answer the most brainiest I know that you have to split up the money betwe class=