In a container, there are jelly beans of 3 colours, grey, blue and green. There are 490 more blue jelly beans than green jelly beans. The number of green jelly beans is ¹₅ more than the grey jelly beans. Given that the number of green jelly beans is 18% of the total number of jelly beans in the container, how many more blue jelly beans are there than grey jelly beans?

Grey jelly beans	Blue jelly beans	Green jelly beans
	1 u + 490	1 u
5x3		6x3
82%		18%
15%	67%	18%

1 + ¹₅ = ⁵₅ + ¹₅ = ⁶₅

Yellow jelly beans : Purple jelly beans = 5 : 6

The number of green jelly beans is repeated.  Make the number of green jelly beans the same.

6 x 3 = 18%

Total number of grey jelly beans and blue jelly beans in percent
= 100% - 18%
= 82%

Number of blue jelly beans in percent
= 82% - 15%
= 67%

Number of more blue jelly beans than green jelly beans in percent
= 67% - 15%
= 49%

49% = 490

1% = 490 ÷ 49 = 10

Number of more blue jelly beans than grey jelly beans
= 67% - 15%
= 52%
= 52 x 10
= 520

Answer(s): 520