13.185. When testing two engines, it was found that the first one consumed 300 g, and the second one 192 g of gasoline, with the second engine working 2 hours less than the first. The first engine consumes 6 g more gasoline per hour than the second. How much gasoline does each engine consume per hour?
## Solution.

Let $x$ g of gasoline be consumed per hour by the second engine, and $(6+x)$ g per hour - by the first. The first engine worked for $\frac{300}{x+6}$ hours, the second - for $\frac{192}{x}$ hours. According to the condition, $\frac{300}{x+6}-\frac{192}{x}=2$, from which $x=24$ g per hour is consumed by the second engine, $24+6=30$ g per hour - by the first.

Answer: 30 and 24 g.