There were some pink stickers and white stickers. The stickers were packed into 2 bags. At first, Bag W contained 230 stickers and 10% of them were white stickers. Bag X contained 950 stickers and 60% of them were white stickers. How many pink stickers and white stickers in total must be moved from Bag W to Bag X such that 25% of the stickers in Bag W are pink and 50% of the stickers in Bag X are white?

	Bag W		Bag X
Total	230		950
	White stickers	Pink stickers	White stickers	Pink stickers
Before	23	207	570	380
Change	- ?	- ?	+ ?	+ ?
After	3 u	1 u	1 p	1 p

Number of white stickers in Bag W at first
= 10% x 230
= ¹⁰₁₀₀ x 230
= 23

Number of pink stickers in Bag W at first
= 230 - 23
= 207

Number of white stickers in Bag X at first
= 60% x 950
= ⁶⁰₁₀₀ x 950
= 570

Number of pink stickers in Bag X at first
= 950 - 570
= 380

Bag W in the end
25% = ²⁵₁₀₀ =¹₄
White stickers : Pink stickers = 3 : 1

Bag X in the end
50% = ⁵⁰₁₀₀ =¹₂
White stickers : Pink stickers = 1 : 1

Total number of white stickers = 3 u + 1 p

3 u + 1 p = 23 + 570
3 u + 1 p = 593 

1 p = 593 - 3 u --- (1)

Total number of pink stickers = 1 u + 1 p
1 u + 1 p = 207 + 380
1 u + 1 p = 587

1 p = 587 - 1 u --- (2)

(2) = (1)
587 - 1 u = 593 - 3 u
3 u - 1 u = 593 - 587
2 u = 6

1 u = 6 ÷ 2 = 3

Total number of pink stickers and white stickers that must be moved from Bag W to Bag X
= 230 - 4 u
= 230 - 4 x 3
= 230 - 12
= 218

Answer(s): 218