A computer factory produces 4032 computers per month at a constant rate, how many computers are built every 30 minutes assuming that there are 28 days in one month? Choose the correct choice from the following:
A) 2.25 .
B) 3.00 .
C) 4.5 .
D) 5.225 .
E) 6.25 .

Rationale: number of hours in 28 days = 28 * 24 number of 30 mins in 28 days = 28 * 24 * 2 number of computers built every 30 mins = 4032 / ( 28 * 24 * 2 ) = 3 answer b
Answer: B