Jim and Maria run a city relay race. The race consists of 8 laps around a planned city route. Jim runs 3 of the laps
at an average speed that is 0.5 mile per hour faster than
Maria's average speed for the remaining 5 laps. What is
Jim and Maria's combined race time? Let r represent
Maria's average speed.

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.