Sherry and Bob like to jog in the park. Sherry can jog at 5 mph, while Bob can jog at 7 mph.
If Sherry starts 30 minutes ahead of Bob, how long will it take Bob to catch up to Sherry?
Draw a grid like the one below and fill in what you know
about Sherry and Bob.
When finished go to the next slide to see how you did.