During a telematch, each group of pupils was supposed to collect as many coloured marbles as possible. Each colour represented a certain point as tabulated:

Colours	Points
Grey	4
Yellow	6
Green	8

In each container, the number of grey marbles was 20% more than the number of green marbles and 30% less than the number of yellow marbles. Given that the total possible points if the group managed to collect all the marbles were 3232 points, how many marbles were not grey in colour?

Grey	Yellow	Green
6x7		5x7
7x6	10x6
42 u	60 u	35 u

	Grey	Yellow	Green	Total
Number	42 u	60 u	35u
Value	4	6	8
Total value	168 u	360 u	280 u	808 u

100% + 20% = 120%
120% = ¹²⁰₁₀₀ =⁶₅

100% - 30% = 70%
70% = ⁷⁰₁₀₀ = ⁷₁₀

Total number of points collected
= 168 u + 360 u + 280 u
= 808 u

808 u = 3232

1 u = 3232 ÷ 808 = 4

Number of marbles not yellow in colour
= 42 u + 35 u
= 77 u
= 77 x 4
= 308

Answer: 308