Question

Nicole's aerobics class exercises to fast paced music. If the rate of the music is 120 beats per minute, how many beats would be there in a class that is 0.75 hours long?

a) 90
b) 160
c) 5400
d) 7200

Answer 1

0.75 hour x (60 minutes)/hour = 45 minutes
(120 beats)/(1 minute) = (x beats)/(120 minutes)