In a survey of 2000 people, 1320 said they had a microwave. what percent of the people surveyed have a microwave?

Lets first set up a proportion:



We could simplify the proportion to make the process easier:



Now we must multiply, 33×100 and 50×p:



Divide both sides by 50:



Times it by 100

about 66% of the people own microwaves

Its quite simple actually. Because Sabah has $450, that is the total amount. remember that each book costs about $75 dollars, and that four of them can be gotten for free. Therefore use (b= (450/75) + 4).

450 is the total amount of money and it is divided by 75 to get the total number of books possible under that amount per book. The reason four is added is that it is stated that four of the books necessary are to be taken from a library for free. Therefore, when solved, b is equal to 10