El caracol de granja se desplaza a una velocidad media de 5,8 m/h, mientras que el caracol común de jardín lo hace a 13,9 mm/s. ¿cuál de los dos es más rápido?

The common garden snail is faster than the farm snail

Step-by-step explanation:

The question in English is

The farm snail moves at an average speed of 5.8 m/h, while the common garden snail moves at 13.9 mm/sec. Which of the two is faster?

we have  

The farm snail moves at an average speed of 5.8 m/h

The common garden snail moves at an average speed of 13.9 mm/sec

Remember that

Convert m/h to mm/sec

Compare the values

therefore

The common garden snail is faster than the farm snail

if you mean

then it's c. 8, -7/3

but if you mean

then it is