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

Colours	Points
White	3
Brown	5
Gold	6

In each container, the number of white balls was 40% more than the number of gold balls and 90% less than the number of brown balls. Given that the total possible points if the group managed to collect all the balls were 4010 points, how many balls were not white in colour?

White	Brown	Gold
7x1		5x1
1x7	10x7
7 u	70 u	5 u

	White	Brown	Gold	Total
Number	7 u	70 u	5u
Value	3	5	6
Total value	21 u	350 u	30 u	401 u

100% + 40% = 140%
140% = ¹⁴⁰₁₀₀ =⁷₅

100% - 90% = 10%
10% = ¹⁰₁₀₀ = ¹₁₀

Total number of points collected
= 21 u + 350 u + 30 u
= 401 u

401 u = 4010

1 u = 4010 ÷ 401 = 10

Number of balls not brown in colour
= 7 u + 5 u
= 12 u
= 12 x 10
= 120

Answer: 120