A jet travels at 434 m/s.
How long does it take to travel 294 m?
Answer in units of s
suppose the problem were
A jet travels at 200 m/s.
How long does it take to travel 100 m?
the answer would be 1/2 second, right? It only has to go 100/200 or 1/2 of the distance it travels in one second.
So, plug in your numbers and do the same calculation.