Ahmad's freight forwarding company charges $18 for vases delivered on time and $15 for vases delivered late. In the month of January, Ahmad's freight forwarding company collected $2280. For every 13 vases delivered, 11 were delivered on time and 2 were delivered late.

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

	On time	Late	Total
Number	11 u	2 u
Value	18	15
Total Value	198 u	30 u	228 u

(a)
Total amount collected in January
= 198 u + 30 u
= 228 u

228 u = 2280

1 u = 2280 ÷ 228 = 10

Total number of vases delivered late
= 2 u
= 2 x 10
= 20

(b)
Amount that Ahmad's freight forwarding company collected less from each late delivery of vases
= 18 - 15
= $3

Number of vases delivered late
= 2 u 
= 2 x 10
= 20

Amount that Ahmad's freight forwarding company collected less from all the late deliveries of vases 
= 20 x 3
= $60

Answer(s): (a) 20; (b) $60