What is 7.5% as a fraction

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?