In a container, there are jelly beans of 3 colours, grey, black and brown. There are 60 less brown jelly beans than black jelly beans. The number of brown jelly beans is ¹₄ more than the grey jelly beans. Given that the number of brown jelly beans is 25% of the total number of jelly beans in the container, how many less grey jelly beans are there than black jelly beans?

Grey jelly beans	Black jelly beans	Brown jelly beans
	1 u + 60	1 u
4x5		5x5
75%		25%
20%	55%	25%

1 + ¹₄ = ⁴₄ + ¹₄ = ⁵₄

Yellow jelly beans : Purple jelly beans = 4 : 5

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

5 x 5 = 25%

Total number of grey jelly beans and black jelly beans in percent
= 100% - 25%
= 75%

Number of black jelly beans in percent
= 75% - 20%
= 55%

Number of more black jelly beans than brown jelly beans in percent
= 55% - 20%
= 30%

30% = 60

1% = 60 ÷ 30 = 2

Number of less grey jelly beans than black jelly beans
= 55% - 20%
= 35%
= 35 x 2
= 70

Answer(s): 70