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

Colours	Points
Brown	3
Gold	6
White	7

In each container, the number of brown marbles was 60% more than the number of white marbles and 10% less than the number of gold marbles. Given that the total possible points if the group managed to collect all the marbles were 7077 points, how many marbles were not brown in colour?

Brown	Gold	White
8x9		5x9
9x8	10x8
72 u	80 u	45 u

	Brown	Gold	White	Total
Number	72 u	80 u	45u
Value	3	6	7
Total value	216 u	480 u	315 u	1011 u

100% + 60% = 160%
160% = ¹⁶⁰₁₀₀ =⁸₅

100% - 10% = 90%
90% = ⁹⁰₁₀₀ = ⁹₁₀

Total number of points collected
= 216 u + 480 u + 315 u
= 1011 u

1011 u = 7077

1 u = 7077 ÷ 1011 = 7

Number of marbles not gold in colour
= 72 u + 45 u
= 117 u
= 117 x 7
= 819

Answer: 819