Each marble bag sold by Rita’s marble company contains 4 green marbles for every 5 yellow marbles. If a bag has 35 yellow marbles, how many green marbles does it contain?

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?