Answer:
9.44 inches
Step-by-step explanation:
In order to find the average rainfall, setting up a proportion, or equivalent ratios, would be the easiest way to find the measurement. Given that 23.6 inches represents 250% of the average:
, where 'x' represents the average rainfall
cross-multiply: 250x = (23.6)(100) or 250x = 2360
divide: 250x/250 = 2360/250
x = 9.44 inches