Pete has already baked 2 pies, and he can bake 1 pie with each additional cup of sugar he buys. How many additional cups of sugar does Pete need in order to bake a total of 100 pies?

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. what distance from city a is the point where the truck and the car will meet?