Three types of curry powder, C, D and E come in containers of 200 g, 350 g and 450 g respectively. Containers of C, D and E are mixed together in the ratio 2 : 4 : 7 to obtain 54.45 kg of an assortment of curry powder.

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

	C	D	E
Number	2 u	4 u	7 u
Value	200	350	450
Total value	400 u	1400 u	3150 u

(a)
Total mass of curry powder
= 400 u + 1400 u + 3150 u
= 4950 u

4950 u = 54450

1 u = 54450 ÷ 4950 = 11

Total number of containers of C and D used
= 2 u + 4 u
= 6 u
= 6 x 11
= 66 

(b)
Combined weight of all the curry powder in containers D and containers E
= 1400 u + 3150 u
= 4550 u

Difference between the combined weight of all the curry powder in containers D and containers E as compared to the curry powder in containers C
= 4550 u - 400 u
= 4150 u
= 4150 x 11
= 45650 g
= 45.65 kg 

Answer(s): (a) 66; (b) 45.65 kg