60 mph
EXAMPLE 3
It takes Andy 10 minutes to read 6 pages of his book. He has already read 150 pages in his book that is
210 pages long. Find how long it takes Andy to read 1 page and also find how long it will take him to
finish his book if he continues to read at the same speed.
by 6:

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.