Question

sharita does special jobs for scientists. she charges $7 for the first 3 pages and $3 for each additional page of scientific typing. Sonia, a biologist, paid $106 to have a research paper typed. How many pages was Sonia's paper?

Answer 1

The answer is 36 pages. The formula is

$106 - $7 = $99

$99 / $3 = 33

3 pages for $7 plus 33 pages for $99 = $106

3 pages plus 33 pages = 36 pages