What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?

What is the time required to punch 1500 cards of 45 column each at the

1.	What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?
A.	8 hrs
B.	7 hrs 15 min
C.	7 hrs 30 min
D.	8 hrs 20 min
Answer» D. 8 hrs 20 min