Question

it takes Joanna 15 minutes to complete 4 puzzles. At that rate, how many puzzles can she complete in 1 hour 45 minutes

Answer 1

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

Answer 2

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
soooo....

28 puzzles = 105 min


Joanna can complete 28 puzzles in 1 hour 45 minutes.

Hope this helped! :)