a light flashes every 5seconds, how many times will it flash in ? of an hour?
Choices.
A) 720
B) 600
C) 650
D) 700
E) 750
1flash=5sec   for 1 min=12flashes   so for 1 hour=12*60= 
<gadget id="calculator">12*60</gadget>
<output>720</output>
720 flashes.   720NSWER:720
<result>A</result>
a light flashes every 5seconds, how many times will it flash in ? of an hour?