2 Answers

ChinaHelloWorld · Answer 1 · 2018-03-07T09:01:40+0000

It will take him 110 minutes.
If he grades 9 tests every 22 minutes, this means that 63 tests/ 9 tests = 7 times
This means that he needs to do it 5 times in order to grade all of the tests.
7 X 22 min (amount of time needed to grade 9 tests)
154 min
or 2 hours 34 min

Dzienny · Answer 2 · 2018-03-10T15:27:20+0000

Do tests over minutes. 9/22=63/x and cross multiply to solve. 63 times 22 is 1386. Divide that by 9. That equals 154. It took Craig 154 minutes to grade 63 tests.

0 Comments

Please log in or register to add a comment.

Please log in or register to answer this question.

2 Answers

0 Comments

Please log in or register to add a comment.

0 Comments

Please log in or register to add a comment.

Other Questions