In a container, there are chocolate bars of 3 colours, white, green and yellow. There are 352 less yellow chocolate bars than green chocolate bars. The number of yellow chocolate bars is ¹₂ more than the white chocolate bars. Given that the number of yellow chocolate bars is 21% of the total number of chocolate bars in the container, how many less white chocolate bars are there than green chocolate bars?

White chocolate bars	Green chocolate bars	Yellow chocolate bars
	1 u + 352	1 u
2x7		3x7
79%		21%
14%	65%	21%

1 + ¹₂ = ²₂ + ¹₂ = ³₂

Yellow chocolate bars : Purple chocolate bars = 2 : 3

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

3 x 7 = 21%

Total number of white chocolate bars and green chocolate bars in percent
= 100% - 21%
= 79%

Number of green chocolate bars in percent
= 79% - 14%
= 65%

Number of more green chocolate bars than yellow chocolate bars in percent
= 65% - 14%
= 44%

44% = 352

1% = 352 ÷ 44 = 8

Number of less white chocolate bars than green chocolate bars
= 65% - 14%
= 51%
= 51 x 8
= 408

Answer(s): 408