Question

Greg is traveling north on a road while Peter is traveling south on the same road. They pass by each other at noon, Greg driving at 40 mph and peter driving 30 mph. At what time will they be at 315 mph?

Answer 1

40x+30x=315

70x=315

315/70= 4.5 hours

12:00 noon + 4.5 hours = 4:30 pm