Jack typed 320 words in 8 minutes. If he typed equal number of words every minute, then how many words can he type in an hour?
A1600
B2000
C3200
D2400
Jack typed 320 words in 8 minutes. If he typed equal number of words every minute, then how many words can he type in an hour?
A1600
B2000
C3200
D2400