At a local pet store zebra fish cost $1.90 and neon tetras cost $2.15. If Mrs. Selee bought 15 fish for a total cost of $30.25, not including tax, how many of each type of fish did she buy?

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?