If it is assumed that each of the \(n\) production workers in a factory assembles one instrument every \(t\) minutes, how many instruments does the factory assemble in \(7.5\) hours of production?
A. \(\dfrac{450n}{t}\)
B. \(\dfrac{450t}{n}\)
C. \(450nt\)
D. \(\dfrac{7.5tn}{60}\)
E. \(\dfrac{7.5n}{60t}\)
Answer: A
Source: GMAT Paper Tests