Me with this proportion i'm not sure how to do

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.