There’s a dress for sale for $70 dollars but the store is selling it for $20 dollars. what is the the percent decrease in in price?

I'm thinking 50%? But i am probabl wrong.

If you take 50/70 and multiply by 100 that is the % mark down in price.

That's about a 71% markdown.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

goog may have it for you