In a box, there are jelly beans of 3 colours, grey, white and yellow. There are 306 more white jelly beans than yellow jelly beans. The number of yellow jelly beans is ¹₃ more than the grey jelly beans. Given that the number of yellow jelly beans is 24% of the total number of jelly beans in the box, how many more white jelly beans are there than grey jelly beans?

Grey jelly beans	White jelly beans	Yellow jelly beans
	1 u + 306	1 u
3x6		4x6
76%		24%
18%	58%	24%

1 + ¹₃ = ³₃ + ¹₃ = ⁴₃

Yellow jelly beans : Purple jelly beans = 3 : 4

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

4 x 6 = 24%

Total number of grey jelly beans and white jelly beans in percent
= 100% - 24%
= 76%

Number of white jelly beans in percent
= 76% - 18%
= 58%

Number of more white jelly beans than yellow jelly beans in percent
= 58% - 18%
= 34%

34% = 306

1% = 306 ÷ 34 = 9

Number of more white jelly beans than grey jelly beans
= 58% - 18%
= 40%
= 40 x 9
= 360

Answer(s): 360