First divide 20 by two and 30 by 2.
You get 10 and 15.
Add the two together:25.
divide 25 by two and you get 12.5
The answer is 12.5
Pat can design a website in 20 hours. His friend can design the same site in 30 hours. How long will it take to design the website working together?
I got 12 hrs.
Is this correct?
2 answers
i tried it differently i still get 12hrs?