Can anybody help me start this? Thanks

Answer 1

I figured it out.

Equation:
time + time = 60 hrs.
---
x/30 + (1425-x)/15 = 60
---
x + 2*1425- 2x = 30*60
---
-x = -1050
x = 1050mL
---
x/30 = 35 hrs (time of 1st storm)
-----
(1425-x)/15 = 375/15 = 25 hr (time of 2nd storm)