Three types of chicken powder, J, K and L come in containers of 240 g, 420 g and 480 g respectively. Containers of J, K and L are mixed together in the ratio 1 : 4 : 5 to obtain 43.2 kg of an assortment of chicken powder.

1. How many containers of J and K are used altogether?
2. Find the difference between the combined weight of all the chicken powder in containers K and containers L as compared to the chicken powder in containers J. Express the weight in kilograms.

	J	K	L
Number	1 u	4 u	5 u
Value	240	420	480
Total value	240 u	1680 u	2400 u

(a)
Total mass of chicken powder
= 240 u + 1680 u + 2400 u
= 4320 u

4320 u = 43200

1 u = 43200 ÷ 4320 = 10

Total number of containers of J and K used
= 1 u + 4 u
= 5 u
= 5 x 10
= 50 

(b)
Combined weight of all the chicken powder in containers K and containers L
= 1680 u + 2400 u
= 4080 u

Difference between the combined weight of all the chicken powder in containers K and containers L as compared to the chicken powder in containers J
= 4080 u - 240 u
= 3840 u
= 3840 x 10
= 38400 g
= 38.4 kg 

Answer(s): (a) 50; (b) 38.4 kg