Three types of curry powder, F, G and H come in containers of 200 g, 300 g and 450 g respectively. Containers of F, G and H are mixed together in the ratio 3 : 6 : 8 to obtain 72 kg of an assortment of curry powder.

1. How many containers of F and G are used altogether?
2. Find the difference between the combined weight of all the curry powder in containers G and containers H as compared to the curry powder in containers F. Express the weight in kilograms.

	F	G	H
Number	3 u	6 u	8 u
Value	200	300	450
Total value	600 u	1800 u	3600 u

(a)
Total mass of curry powder
= 600 u + 1800 u + 3600 u
= 6000 u

6000 u = 72000

1 u = 72000 ÷ 6000 = 12

Total number of containers of F and G used
= 3 u + 6 u
= 9 u
= 9 x 12
= 108 

(b)
Combined weight of all the curry powder in containers G and containers H
= 1800 u + 3600 u
= 5400 u

Difference between the combined weight of all the curry powder in containers G and containers H as compared to the curry powder in containers F
= 5400 u - 600 u
= 4800 u
= 4800 x 12
= 57600 g
= 57.6 kg 

Answer(s): (a) 108; (b) 57.6 kg