Phillip wants to estimate how many words are in a book he is reading for class. He counts the words on 21 pages, and he finds the mean word count is 311 words per page. There are 196 pages in the book. Which is the best estimate for the total number of words in the book?

60956

Step-by-step explanation:

The mean word count per page is 311 and because there are 196 pages in total, you multiply the average words per page (311) by the number of pages (196) to get 60,956

60956

Step-by-step explanation: 311 x 196

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: