Answer:
0.87 inches (or if it meant after 3.5 more hours, 4.37 inches)
Explanation:
15/3.5 is 4.29(rounded to the nearest hundredth)
3.75/4.29= 0.87 inches
(or if it meant after 3.5 more hours)
3.5+0.87= 4.37
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