The answer to your question is true.
The Rainhill Trials were an important competition in the early days of steam locomotive railways, run in October 1829 for the nearly completed Liverpool and Manchester Railway. Five engines competed, running back and forth along a mile length of level track at Rainhill,
The question isn't complete and you might want to ask this in the math section.
But just to help you out, 3x means 3 times whatever "x" is.
