Multiply the following complex numbers. Reduce terms and simplify. Explain how your simplified result and the first term. In the pair below are related algebraically to each other and to the complex number (1 + 1.)

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?