What’s the area of this?

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

If you could answer these your a life saver