In a container, there are jelly beans of 3 colours, silver, pink and black. There are 360 less black jelly beans than pink jelly beans. The number of black jelly beans is ¹₃ more than the silver jelly beans. Given that the number of black jelly beans is 20% of the total number of jelly beans in the container, how many less silver jelly beans are there than pink jelly beans?

Silver jelly beans	Pink jelly beans	Black jelly beans
	1 u + 360	1 u
3x5		4x5
80%		20%
15%	65%	20%

1 + ¹₃ = ³₃ + ¹₃ = ⁴₃

Yellow jelly beans : Purple jelly beans = 3 : 4

The number of black jelly beans is repeated.  Make the number of black jelly beans the same.

4 x 5 = 20%

Total number of silver jelly beans and pink jelly beans in percent
= 100% - 20%
= 80%

Number of pink jelly beans in percent
= 80% - 15%
= 65%

Number of more pink jelly beans than black jelly beans in percent
= 65% - 15%
= 45%

45% = 360

1% = 360 ÷ 45 = 8

Number of less silver jelly beans than pink jelly beans
= 65% - 15%
= 50%
= 50 x 8
= 400

Answer(s): 400