3. 
It takes Shelby 2 hours and 3 minutes to cut the grass. Abigail needs 3 hours and 46 minutes to cut the grass. If they work together, how long will it take them to cut the grass?


4. 
Megan and Julia can finish apiece of work in 15 days. Megan can do the job herself in twenty days. If Julia wanted to do the job alone, how long would it take her?

