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Mathematics 15 Online
OpenStudy (princessaurora):

If the cost of water is $5 for 1,000 gallons (1 milliliter = 0.000264 gallon), how many hours will it take for the leak to cost Neil $40? The leak measures 75ml.

OpenStudy (danjs):

what is the mass flow rate for the leak, or the velocity and pressure out the 75ml leak

OpenStudy (danjs):

oh, 75 ml. is that pre some time, to make it a rate

OpenStudy (princessaurora):

I meant to say that 75 ml is the volume of water collected in the beaker in the first hour from the leak.

OpenStudy (princessaurora):

It's the amount of water the leak made.

OpenStudy (danjs):

75 ml /hr leak

OpenStudy (princessaurora):

the volume increases by (1/12) of the volume of water that leaked during the first hour.

OpenStudy (danjs):

start with the given , just convert the units, start with 75 mL / hr

OpenStudy (danjs):

|dw:1447457302022:dw|

OpenStudy (princessaurora):

So $5/1hr?

OpenStudy (danjs):

that is just multiplying the leak 75 ml / 1 hr, by ratios of 1, to change units to dollar / hr (75 * 0.000264 * 5) / 1000 [$/hr]

OpenStudy (danjs):

should be a smallll number, the leak is only 75 mL an hour, and water is cheap 5 bucks per 1000 gal

OpenStudy (danjs):

9.9 X 10^(-5) dollars/ hr

OpenStudy (danjs):

how many hours till that reaches dollars...

OpenStudy (danjs):

40 dollars

OpenStudy (princessaurora):

I'm trying to calculate but my calculator isn't letting me.

OpenStudy (princessaurora):

I got .000099

OpenStudy (princessaurora):

For that equation you showed me.

OpenStudy (danjs):

yeah , so the 40 dollars divided by that is something like 404040 hours, less i did something wrong

OpenStudy (danjs):

that is like 46 years

OpenStudy (princessaurora):

I got that too

OpenStudy (princessaurora):

Thank you for your help. Appreciate it.

OpenStudy (danjs):

welcome

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