To calculate the time you need to initially leave your house, you first need to determine the total time it will take for you to volunteer at the community center and return home.
It will take you 4 hours to volunteer at the community center. Adding the 40 minutes it takes to walk there and the 10 minutes it takes to get home, the total time spent will be 4 hours and 50 minutes (4 hours + 40 minutes + 10 minutes = 4 hours 50 minutes).
Since you must be back at 6:30 pm, you need to subtract the total time spent (4 hours 50 minutes) from the time you must be home (6:30 pm).
6:30 pm - 4 hours 50 minutes = 1:40 pm
Therefore, you should initially leave your house at 1:40 pm to volunteer at the community center so that you can be back by 6:30 pm.
You plan to volunteer for 4 hours at the community center. It will take you 40 to walk to the community center but you will have a ride after your done so it will take you 10 minutes to get home. If you must be home by 6:30 pm when should you initially your house to go volunteer at the community center
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