<PRE><B>Question 752958</B>
If it takes 2 3/4 hours to fill 1 CD
then it will take 4 times 2 3/4 hours 
to fill 4.
Convert 2 3/4 into a total fraction
= 11/4   multiply by 4 and this equals
11 hours.
Or you could convert the 3/4 of an hour
into minutes = 45 mins.
Multiply 2 hours and 45 minutes by 4
= 11 hours.
Hope this helps
:-)</PRE>