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

Colours	Points
Black	3
Blue	4
White	5

In each container, the number of black beads was 40% more than the number of white beads and 70% less than the number of blue beads. Given that the total possible points if the group managed to collect all the beads were 1254 points, how many beads were not black in colour?

Black	Blue	White
7x3		5x3
3x7	10x7
21 u	70 u	15 u

	Black	Blue	White	Total
Number	21 u	70 u	15u
Value	3	4	5
Total value	63 u	280 u	75 u	418 u

100% + 40% = 140%
140% = ¹⁴⁰₁₀₀ =⁷₅

100% - 70% = 30%
30% = ³⁰₁₀₀ = ³₁₀

Total number of points collected
= 63 u + 280 u + 75 u
= 418 u

418 u = 1254

1 u = 1254 ÷ 418 = 3

Number of beads not black in colour
= 70 u + 15 u
= 85 u
= 85 x 3
= 255

Answer: 255