In a box, there are chocolate bars of 3 colours, red, pink and brown. There are 192 more pink chocolate bars than brown chocolate bars. The number of brown chocolate bars is ¹₅ more than the red chocolate bars. Given that the number of brown chocolate bars is 24% of the total number of chocolate bars in the box, how many more pink chocolate bars are there than red chocolate bars?

Red chocolate bars	Pink chocolate bars	Brown chocolate bars
	1 u + 192	1 u
5x4		6x4
76%		24%
20%	56%	24%

1 + ¹₅ = ⁵₅ + ¹₅ = ⁶₅

Yellow chocolate bars : Purple chocolate bars = 5 : 6

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

6 x 4 = 24%

Total number of red chocolate bars and pink chocolate bars in percent
= 100% - 24%
= 76%

Number of pink chocolate bars in percent
= 76% - 20%
= 56%

Number of more pink chocolate bars than brown chocolate bars in percent
= 56% - 20%
= 32%

32% = 192

1% = 192 ÷ 32 = 6

Number of more pink chocolate bars than red chocolate bars
= 56% - 20%
= 36%
= 36 x 6
= 216

Answer(s): 216