Last week Vicky's vehicles sold 7 smart cars and 8 SUVs out of a total of 24 cars based on this data what is the probability that the next customer purchases an SUV? A) 8/24
B) 1/3
C) 7/24
D) 7/8
Can somebody please help?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )