There are 25% more brown beads than yellow beads in a bag. After Reggie removed 40% of the brown beads and increased the number of yellow beads by 30%, there are now 176 fewer brown beads than yellow beads. Find the number of yellow beads at first.

	Brown	Yellow
Before	5 u	4 u
Change	- 2 u	+ 1.2 u
After	3 u	5.2 u

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

125% = ¹²⁵₁₀₀ = ⁵₄

Number of brown beads that Reggie removed
= 40% x 5 u
= ⁴⁰₁₀₀ x 5 u 
= 2 u

Number of yellow beads that Reggie increased 
= 30% x 4 u
= ³⁰₁₀₀  x 4 u
= 1.2 u

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

Number of yellow beads in the end
= 4 u + 1.2 u
= 5.2 u

Number of fewer brown beads than yellow beads in the end
= 5.2 u - 3 u 
= 2.2 u 

2.2 u = 176

1 u = 176 ÷ 2.2 = 80

Number of yellow beads at first
= 4 u
= 4 x 80
= 320

Answer(s): 320