Luke's freight forwarding company charges $15 for every plate delivered on time and $11 for every plate delivered late. In the month of November, Luke's freight forwarding company collected $2304. For every 20 plates delivered, 17 were delivered on time and 3 were delivered late.

1. What was the total number of plates delivered on time?
2. How much less money did Luke's freight forwarding company collect in November due to the late deliveries of the plates?

	On time	Late	Total
Number	17 u	3 u
Value	15	11
Total Value	255 u	33 u	288 u

(a)
Total amount collected in November
= 255 u + 33 u
= 288 u

288 u = 2304

1 u = 2304 ÷ 288 = 8

Total number of plates delivered on time
= 17 u
= 17 x 8
= 136

(b)
Amount that Luke's freight forwarding company collected less from each late delivery of plates
= 15 - 11
= $4

Number of plates delivered late
= 3 u 
= 3 x 8
= 24

Amount that Luke's freight forwarding company collected less from all the late deliveries of plates 
= 24 x 4
= $96

Answer(s): (a) 136; (b) $96