Each of the 17 guinea pigs needs its cage cleaned. If it takes 1 hour to clean 4 cages, how many hours will it take to clean all 17 cages? It will take hours to clean all the cages.

Time taken to clean all 17 cages = 4.25 hours

Step-by-step explanation:

Total number of Guinea pig cage = 17

Time taken to clean 4 cage = 1 hour

So,

Time taken to clean 1 cage = hour = 15 minutes

Therefore,

Time taken to clean 17 cages = 17 × 15 minutes = 255 minutes

= hours

= 4.25 hours

47 - 90 = 43

43 - 180 = x

x = 137