Multiple choice general knowledge

Susan can type 10 pages in 5 minutes. Mary can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?

  1. 15

  2. 25

  3. 75

  4. 65

  5. 30
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Susan types 2 pages/minute, Mary types 0.5 pages/minute. Together they type 2.5 pages/minute. In 30 minutes: 2.5 × 30 = 75 pages. Susan contributes 60 pages, Mary contributes 15 pages.

Keep practicing — related questions