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

Colours	Points
Red	3
Yellow	5
Silver	6

In each container, the number of red beads was 60% more than the number of silver beads and 30% less than the number of yellow beads. Given that the total possible points if the group managed to collect all the beads were 3890 points, how many beads were not red in colour?

Red	Yellow	Silver
8x7		5x7
7x8	10x8
56 u	80 u	35 u

	Red	Yellow	Silver	Total
Number	56 u	80 u	35u
Value	3	5	6
Total value	168 u	400 u	210 u	778 u

100% + 60% = 160%
160% = ¹⁶⁰₁₀₀ =⁸₅

100% - 30% = 70%
70% = ⁷⁰₁₀₀ = ⁷₁₀

Total number of points collected
= 168 u + 400 u + 210 u
= 778 u

778 u = 3890

1 u = 3890 ÷ 778 = 5

Number of beads not yellow in colour
= 56 u + 35 u
= 91 u
= 91 x 5
= 455

Answer: 455