If the speed of X meters per second is equivalent

If the speed of X meters per second is equivalent to the speed of y kilometers per hour, what is Y in terms of x?
5x/18
6x/5
18x/5
60x
2,600,000x

Now --- Y km/hr.....Y * 1000/3600 m/sec ...Y*5/18 m/sec
Y*5/18 = XHence Y = X*18/5
Ans - C