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
Black	3
White	4
Pink	6

In each container, the number of black marbles was 40% more than the number of pink marbles and 90% less than the number of white marbles. Given that the total possible points if the group managed to collect all the marbles were 662 points, how many marbles were not black in colour?

Black	White	Pink
7x1		5x1
1x7	10x7
7 u	70 u	5 u

	Black	White	Pink	Total
Number	7 u	70 u	5u
Value	3	4	6
Total value	21 u	280 u	30 u	331 u

100% + 40% = 140%
140% = ¹⁴⁰₁₀₀ =⁷₅

100% - 90% = 10%
10% = ¹⁰₁₀₀ = ¹₁₀

Total number of points collected
= 21 u + 280 u + 30 u
= 331 u

331 u = 662

1 u = 662 ÷ 331 = 2

Number of marbles not black in colour
= 70 u + 5 u
= 75 u
= 75 x 2
= 150

Answer: 150