It takes joanna 15 minutes to complete 4 puzzles. at that rate, how many puzzles can she complete in 1 hour 45 minutes

Hi there!

4 puzzles = 15 min
1 puzzle = 15/4 = 3.75 min

x puzzles = 105 min (which is the same as 1 hour 45 minutes)
divide 105 / 3.75 = 28
s

28 puzzles = 105 min

Joanna can complete 28 puzzles in 1 hour 45 minutes.

Hope this helped! :)

28 puzzles.
1 hour 45 min = 95 min. 95/15 = 7. 7 x 4 = 28

What is the question?