In a box, there are chocolate bars of 3 colours, white, pink and red. There are 304 less red chocolate bars than pink chocolate bars. The number of red chocolate bars is ¹₂ more than the white chocolate bars. Given that the number of red chocolate bars is 9% of the total number of chocolate bars in the box, how many less white chocolate bars are there than pink chocolate bars?

White chocolate bars	Pink chocolate bars	Red chocolate bars
	1 u + 304	1 u
2x3		3x3
91%		9%
6%	85%	9%

1 + ¹₂ = ²₂ + ¹₂ = ³₂

Yellow chocolate bars : Purple chocolate bars = 2 : 3

The number of red chocolate bars is repeated.  Make the number of red chocolate bars the same.

3 x 3 = 9%

Total number of white chocolate bars and pink chocolate bars in percent
= 100% - 9%
= 91%

Number of pink chocolate bars in percent
= 91% - 6%
= 85%

Number of more pink chocolate bars than red chocolate bars in percent
= 85% - 6%
= 76%

76% = 304

1% = 304 ÷ 76 = 4

Number of less white chocolate bars than pink chocolate bars
= 85% - 6%
= 79%
= 79 x 4
= 316

Answer(s): 316