Dorothy and Rosanne are baking cookies for a party. Working alone, Rosanne can finish the cookies in 6 hours. Dorothy can finish them in 8 hours if she is working alone. How long will it take them to bake the cookies if they are working together? Round your answer to the nearest hundredth if necessary.
• 7.00 hours
• 3.43 hours
• 0.29 hours
• 14.00 hours
2 answers
There's only one obvious answer. What do you think it is?
3.43 hours?
21 answers