In a container, there are chocolate bars of 3 colours, yellow, pink and brown. There are 230 more pink chocolate bars than brown chocolate bars. The number of brown chocolate bars is ¹₃ more than the yellow chocolate bars. Given that the number of brown chocolate bars is 28% of the total number of chocolate bars in the container, how many more pink chocolate bars are there than yellow chocolate bars?

Yellow chocolate bars	Pink chocolate bars	Brown chocolate bars
	1 u + 230	1 u
3x7		4x7
72%		28%
21%	51%	28%

1 + ¹₃ = ³₃ + ¹₃ = ⁴₃

Yellow chocolate bars : Purple chocolate bars = 3 : 4

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

4 x 7 = 28%

Total number of yellow chocolate bars and pink chocolate bars in percent
= 100% - 28%
= 72%

Number of pink chocolate bars in percent
= 72% - 21%
= 51%

Number of more pink chocolate bars than brown chocolate bars in percent
= 51% - 21%
= 23%

23% = 230

1% = 230 ÷ 23 = 10

Number of more pink chocolate bars than yellow chocolate bars
= 51% - 21%
= 30%
= 30 x 10
= 300

Answer(s): 300