The answer is a hope it helps

The probability of getting 0 heads in 4 tosses (or equivalently, 4 tails) is

.
So the desired probability is
340 you were right
Step-by-step explanation:
Answer:
15%
Step-by-step explanation:
100-85=15
100%= the total cost of the book
85%= price she bought it for
15%= the percentage the book was reduced by