There are 25% more silver beads than yellow beads in a bag. After Carl removed 40% of the silver beads and increased the number of yellow beads by 35%, there are now 264 fewer silver beads than yellow beads. Find the number of yellow beads at first.

	Silver	Yellow
Before	5 u	4 u
Change	- 2 u	+ 1.4 u
After	3 u	5.4 u

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

125% = ¹²⁵₁₀₀ = ⁵₄

Number of silver beads that Carl removed
= 40% x 5 u
= ⁴⁰₁₀₀ x 5 u 
= 2 u

Number of yellow beads that Carl increased 
= 35% x 4 u
= ³⁵₁₀₀  x 4 u
= 1.4 u

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

Number of yellow beads in the end
= 4 u + 1.4 u
= 5.4 u

Number of fewer silver beads than yellow beads in the end
= 5.4 u - 3 u 
= 2.4 u 

2.4 u = 264

1 u = 264 ÷ 2.4 = 110

Number of yellow beads at first
= 4 u
= 4 x 110
= 440

Answer(s): 440