Question

All 23 of Mr. Rodman's students visited the school store. 17 students bought pencils. 12 students bough paper. How many students bought both pencils and paper?

Answer 1

The answer should be 12 hope this helps out

Answer 2

10 students bought both pencils & paper. 17+12 equals 29, not 23, which is how you know 10 people must have bought both