Susan has 4 times as many quarters as dimes and 16 less dimes than nickels. If she has $13.45 in coins, how many of each coins does she have. Need ASAP pls

If you can try to add an explanation not a link

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?