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
White	4
Silver	7
Grey	9

In each container, the number of white beads was 20% more than the number of grey beads and 70% less than the number of silver beads. Given that the total possible points if the group managed to collect all the beads were 1463 points, how many beads were not white in colour?

White	Silver	Grey
6x1		5x1
3x2	10x2
6 u	20 u	5 u

	White	Silver	Grey	Total
Number	6 u	20 u	5u
Value	4	7	9
Total value	24 u	140 u	45 u	209 u

100% + 20% = 120%
120% = ¹²⁰₁₀₀ =⁶₅

100% - 70% = 30%
30% = ³⁰₁₀₀ = ³₁₀

Total number of points collected
= 24 u + 140 u + 45 u
= 209 u

209 u = 1463

1 u = 1463 ÷ 209 = 7

Number of beads not silver in colour
= 6 u + 5 u
= 11 u
= 11 x 7
= 77

Answer: 77