(b) A machine in a food canning factory produces 250 cans every hour. How many cans would be produced in 25 minutes?
(C) If 14 pens cost $5.60, find the cost of 3 pens.
+36916 Find the rate PER MINUTE
250 cans/hr x 1 hr/60min = 4.1666 can/min
4.1666 can/min x 25 min = 104 cans
Or use cans per hour....but then you'll need to convert 25 min to hours 25/60 = .4166 hr etc
$5.60/14 pen x 3 pen = $1.20 See how things 'cancel out' in these solutions ....if you set them up correctly ! 
