In a container, there are chocolate bars of 3 colours, yellow, pink and black. There are 240 more pink chocolate bars than black chocolate bars. The number of black chocolate bars is ¹₂ more than the yellow chocolate bars. Given that the number of black chocolate bars is 15% 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	Black chocolate bars
	1 u + 240	1 u
2x5		3x5
85%		15%
10%	75%	15%

1 + ¹₂ = ²₂ + ¹₂ = ³₂

Yellow chocolate bars : Purple chocolate bars = 2 : 3

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

3 x 5 = 15%

Total number of yellow chocolate bars and pink chocolate bars in percent
= 100% - 15%
= 85%

Number of pink chocolate bars in percent
= 85% - 10%
= 75%

Number of more pink chocolate bars than black chocolate bars in percent
= 75% - 10%
= 60%

60% = 240

1% = 240 ÷ 60 = 4

Number of more pink chocolate bars than yellow chocolate bars
= 75% - 10%
= 65%
= 65 x 4
= 260

Answer(s): 260