5 pairs of numbers
(1, 12)
(2, 12)
(3, 12)
(4, 12)
(3, 4)
To find this it would be 36/3=4/x
Then cross multiply
36*4/3
That’s the answer
Do you have a picture you can upload? It’s most likely 24/2 = 12
They hiked more on the 2nd day because they are retracing their steps.