Gabriella uses 8.4 pints of white paint and blue paint to paint her bedroom walls.
2/5 of this amount is white paint, and the rest is blue paint. how many pints of blue paint did she use to paint her bedroom walls?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.