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

Click button first when a symbol is required. X

Penelope and Lucy take 3 hours to clean the flat together. If Penelope takes 5 hours to clean the flat on her own, how long will it take Lucy to clean the flat alone?