A fast-food chain gives each customer a coupon, the surface of which can be scratched to reveal

Question:

A fast-food chain gives each customer a the surface of which can be scratched to reveal whether a prize will be received. The odds for winning $1000 per week for life are listed as 1 to 200,000,000, while the odds for winning a free hamburger are 1 to 15. Sheila is going to have lunch at her local franchise of the chain and will receive one during her visit. Determine the probability that she will win
a. $1000 per week for life.
b. a free hamburger.
c. either the lifetime $1000/week or a free hamburger.
d. both the lifetime $1000/week and a free hamburger.
Coupon
A coupon or coupon payment is the annual interest rate paid on a bond, expressed as a percentage of the face value and paid from issue date until maturity. Coupons are usually referred to in terms of the coupon rate (the sum of coupons paid in a...