Three types of curry powder, F, G and H come in containers of 240 g, 360 g and 540 g respectively. Containers of F, G and H are mixed together in the ratio 3 : 4 : 7 to obtain 35.64 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	4 u	7 u
Value	240	360	540
Total value	720 u	1440 u	3780 u

(a)
Total mass of curry powder
= 720 u + 1440 u + 3780 u
= 5940 u

5940 u = 35640

1 u = 35640 ÷ 5940 = 6

Total number of containers of F and G used
= 3 u + 4 u
= 7 u
= 7 x 6
= 42 

(b)
Combined weight of all the curry powder in containers G and containers H
= 1440 u + 3780 u
= 5220 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
= 5220 u - 720 u
= 4500 u
= 4500 x 6
= 27000 g
= 27 kg 

Answer(s): (a) 42; (b) 27 kg