Tom,

Well, actually the problem didn't mention about what you've stated below. It's all assumption I think. That's why my answer was a quick assumption too.

>Rather than thinking in “two dimensions” we thought in 3. To solve the problem you stated would require an engineer to know the circular mil area of the hoses and the pressure vs. time (it may vary), the material the hose was made of and its wall diameter. You would end up with at least three pages of calculations. The result would be more accurate but of little interest to the “real world”! :)