## 124. Math Puzzle $9 / 75$

A natural gas source supplies $35000 \mathrm{~m}^{3}$ of gas at 1.5 at to the collection pipeline daily.

How many cubic meters does the interior of the gas source, which is under a pressure of 60 at, lose?
The law of Boyle-Mariotte applies:

$$
p_{1} V_{1}=p_{2} V_{2} \quad, \quad V_{2}=\frac{1.5 \cdot 35000}{60}=875 \mathrm{~m}^{3}
$$

The natural gas source loses $875 \mathrm{~m}^{3}$ of gas daily.