3/4 of a puzzle in 7/8 hours

Question

What's the unit rate?

Answer 1

(7/8)hr/(3/4) puzzle = 7/6 hours/puzzle or
6/7 puzzles/hour

Answer 2

(3/4)/(7/8) = x/1

(7/8)x = 3/4

x = (3/4) / (7/8)

x = (3/4) * (8/7)

x = 24/28 = 6/7 of the puzzle in 1 hour

Answer 3

798

Answer 4

Drink 4/4 liters in 1/4 of an hour

Answer 5

6/7 hours