Question
Henry and Eric, together, can clean a room in 3 hours. If Henry is cleaning the room alone, he can only complete the task in 9 hours. How long will Eric take to clean a room all by himself? Express your answer in mixed number.
3 m

Click button first when a symbol is required. X

Henry and Eric, together, can clean a room in 3 hours. If Henry is cleaning the room alone, he can only complete the task in 9 hours. How long will Eric take to clean a room all by himself? Express your answer in mixed number.