In a container, there are sweets of 3 colours, blue, grey and white. There are 90 more grey sweets than white sweets. The number of white sweets is ¹₃ more than the blue sweets. Given that the number of white sweets is 20% of the total number of sweets in the container, how many more grey sweets are there than blue sweets?

Blue sweets	Grey sweets	White sweets
	1 u + 90	1 u
3x5		4x5
80%		20%
15%	65%	20%

1 + ¹₃ = ³₃ + ¹₃ = ⁴₃

Yellow sweets : Purple sweets = 3 : 4

The number of white sweets is repeated.  Make the number of white sweets the same.

4 x 5 = 20%

Total number of blue sweets and grey sweets in percent
= 100% - 20%
= 80%

Number of grey sweets in percent
= 80% - 15%
= 65%

Number of more grey sweets than white sweets in percent
= 65% - 15%
= 45%

45% = 90

1% = 90 ÷ 45 = 2

Number of more grey sweets than blue sweets
= 65% - 15%
= 50%
= 50 x 2
= 100

Answer(s): 100