There are 25% more silver stickers than white stickers in a bag. After Zeph removed 40% of the silver stickers and increased the number of white stickers by 30%, there are now 198 fewer silver stickers than white stickers. Find the number of white stickers at first.

	Silver	White
Before	5 u	4 u
Change	- 2 u	+ 1.2 u
After	3 u	5.2 u

Number of silver stickers in percentage
= 100% + 25%
= 125%

125% = ¹²⁵₁₀₀ = ⁵₄

Number of silver stickers that Zeph removed
= 40% x 5 u
= ⁴⁰₁₀₀ x 5 u 
= 2 u

Number of white stickers that Zeph increased 
= 30% x 4 u
= ³⁰₁₀₀  x 4 u
= 1.2 u

Number of silver stickers in the end
= 5 u - 2 u
= 3 u

Number of white stickers in the end
= 4 u + 1.2 u
= 5.2 u

Number of fewer silver stickers than white stickers in the end
= 5.2 u - 3 u 
= 2.2 u 

2.2 u = 198

1 u = 198 ÷ 2.2 = 90

Number of white stickers at first
= 4 u
= 4 x 90
= 360

Answer(s): 360