Question 23
Michelle and Lenny can finish a science project together in 24 days. If Michelle works alone for 6 days and then Lenny works alone for 4 days, only one fifth of the project is finished. How many days would Michelle need to finish the whole project alone?
Standard work-rate interpretation: each person works at a constant daily rate, and their rates add when they work together.
Standard work-rate interpretation: each person works at a constant daily rate, and their rates add when they work together.