the squares and cubes didn't come out right

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- October 26th 2008, 07:27 PM #1
## Help, please

The Volume, V of a given mass of gas varies directly as the temperature

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T and inversely as the pressure, P. If V= 276.0in when T= 230 degrees

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and P= 10 lbs , what is the volume when T= 130 degrees and P = 15 lbs ?

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The answer is 104.0 in Please show work so I can understand.

Thanks

- October 26th 2008, 07:33 PM #2

- October 26th 2008, 07:44 PM #3

- Joined
- Oct 2008
- Posts
- 51

In math lang:

Let . In the transition, temperature goes from 230 to 130. So, new temperature is of original temperature. Pressure goes from 10 to 15, and the new pressure is of the original.

Since V is directly proportional to T and inversely proportional to P, it will suffer a decrease because of temperature drop and a decrease because pressure P raises 50%. So,

Hope it's clear,