Question
Sarah and Jean take 2 hours to clean the flat together. If Sarah takes 5 hours to clean the flat on her own, how long will it take Jean to clean the flat alone?
3 m

Click button first when a symbol is required. X

Sarah and Jean take 2 hours to clean the flat together. If Sarah takes 5 hours to clean the flat on her own, how long will it take Jean to clean the flat alone?