There are 10 less red skittles than there are orange skittles in a bag. The total number of orange skittles is also twice the number of red skittles. How many orange skittles are in the bag.

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?