Item 8 A container has peppermint gum and spearmint gum. There are 40 pieces of peppermint gum in the container and the ratio of peppermint gum to spearmint gum is 5 : 2. Find the number of pieces of spearmint gum in the container.

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?