i don't know how to start this problem. please help me solve it so i know how to do these in the future
Alice is picking up trash in the community park. She can rid the whole park of trash in 5 hours. After she works for 2 hours, her friend Brenda comes and helps her. The two of them finish in 1 more hour. How fast can Brenda clean the park, by herself?
+118652 Alice is picking up trash in the community park. She can rid the whole park of trash in 5 hours. After she works for 2 hours, her friend Brenda comes and helps her. The two of them finish in 1 more hour. How fast can Brenda clean the park, by herself?
Alice cleans 1 park in 5 hours
After 2 hours, Alice has cleanted 2/5 of the park
There is 3/5 of the park left to clean
Brenda comes and helps and the job is finished in 1 hour
In one hour Alice will clean 1/5 of the park which means that Brenda cleans 2/5 of the park in this time
So
Branda is working twice as fast as Alice.
So
Brenda can clean the whol park by herself in how much time?
Your turn to answer., 
