You and your friend decide to meet for the weekend at the lake. You leave your house at 8 am, and you are driving smiles per hour. Your friend left a bit late and is leaving the house at 10a.m. Your friend wants to catch up so is now speeding and going miles an hour. How long will it take your friend to catch up to you?
a. 5 hours b. 6 hours c. 4 hours d. 3 hours
