Question

Mia and Holly can clean their room in 20 min, working together. Mia, working alone, can do the job in 30 min. How many minutes will it take holly to clean their room, working alone?

Answer 1

Answer: 30 i do believe

Step-by-step explanation: Since Mia can do it in 30 minutes i think you need to add 10 to 20 to get 30. If im wrong choose 10