In another game at Bonehead Casino in Reno, the player draws one card from a standard deck.

If it is

an A, Then the player wins $100

a Q, 8, Then the player wins $80

a K, Then the player wins $70;

anything else, the player loses.

It costs $25 to play (for each play).

Now, Melvin plays the game 5000 times,

Rufus plays the game 80,000 times. Find the probability that

(a) Melvin makes $7000 or more.

(b) Rufus makes $14,400 or more.