it takes Christine 15 minutes longer to clean the room than it takes her sister and if they work together it takes them 56 minutes. How long does it take Christine to clean the room by herself?

Sagot :

Answer:

I like to help, but my answer would not be 100% correct

base on my solutions...

it will takes 1 hour and 45 minutes for Christine to clean the room by herself

and 1 hour and 30 minutes for her sister, then if they work together it only takes 56 minutes to clean the room

Step-by-step explanation: