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
Pink	4
Purple	6
Silver	8

In each container, the number of pink marbles was 20% more than the number of silver marbles and 90% less than the number of purple marbles. Given that the total possible points if the group managed to collect all the marbles were 4240 points, how many marbles were not pink in colour?

Pink	Purple	Silver
6x1		5x1
1x6	10x6
6 u	60 u	5 u

	Pink	Purple	Silver	Total
Number	6 u	60 u	5u
Value	4	6	8
Total value	24 u	360 u	40 u	424 u

100% + 20% = 120%
120% = ¹²⁰₁₀₀ =⁶₅

100% - 90% = 10%
10% = ¹⁰₁₀₀ = ¹₁₀

Total number of points collected
= 24 u + 360 u + 40 u
= 424 u

424 u = 4240

1 u = 4240 ÷ 424 = 10

Number of marbles not purple in colour
= 6 u + 5 u
= 11 u
= 11 x 10
= 110

Answer: 110