Marco tosses two coins, a quarter and a nickel. Write a proportion that can be used to find p. the percent of times Marco can expect both coins to lanad heads up.

Question

Marco tosses two coins, a quarter and a nickel.  Write a proportion that can be used to find p. the percent of times Marco can expect both coins to lanad heads up.

Bob · Answer

There are four possible outcomes: HH HT TH TT 1 out of those four outcomes is the case where both coins land heads up. Therefore, p=1/4=25%