Answer: 6 hours
Step-by-step explanation:
Given, Tim and Jim are working on a school project together.
Tim takes 10 hours to complete the school project.
If Jim worked alone, it would take him 15 hours
Let t be the time they both take if they work together.
Then, 

So, it will take<u> 6 hours</u> to complete the school project together .
Answer:
see the attachment and Mark as brainleist plz
Answer:
50!
Step-by-step explanation:
150=3*50
100=2*50
Hope it will help! if not, i'm sorry, just feel free to comment below to ask me any question u might have! :)