Charlie's freight forwarding company charges $13 for every vase delivered on time and $10 for every vase delivered late. In the month of February, Charlie's freight forwarding company collected $1728. For every 12 vases delivered, 8 were delivered on time and 4 were delivered late.

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

	On time	Late	Total
Number	8 u	4 u
Value	13	10
Total Value	104 u	40 u	144 u

(a)
Total amount collected in February
= 104 u + 40 u
= 144 u

144 u = 1728

1 u = 1728 ÷ 144 = 12

Total number of vases delivered on time
= 8 u
= 8 x 12
= 96

(b)
Amount that Charlie's freight forwarding company collected less from each late delivery of vases
= 13 - 10
= $3

Number of vases delivered late
= 4 u 
= 4 x 12
= 48

Amount that Charlie's freight forwarding company collected less from all the late deliveries of vases 
= 48 x 3
= $144

Answer(s): (a) 96; (b) $144