There are 25% more brown stamps than green stamps in a bag. After Cole removed 20% of the brown stamps and increased the number of green stamps by 35%, there are now 84 fewer brown stamps than green stamps. Find the number of green stamps at first.

	Brown	Green
Before	5 u	4 u
Change	- 1 u	+ 1.4 u
After	4 u	5.4 u

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

125% = ¹²⁵₁₀₀ = ⁵₄

Number of brown stamps that Cole removed
= 20% x 5 u
= ²⁰₁₀₀ x 5 u 
= 1 u

Number of green stamps that Cole increased 
= 35% x 4 u
= ³⁵₁₀₀  x 4 u
= 1.4 u

Number of brown stamps in the end
= 5 u - 1 u
= 4 u

Number of green stamps in the end
= 4 u + 1.4 u
= 5.4 u

Number of fewer brown stamps than green stamps in the end
= 5.4 u - 4 u 
= 1.4 u 

1.4 u = 84

1 u = 84 ÷ 1.4 = 60

Number of green stamps at first
= 4 u
= 4 x 60
= 240

Answer(s): 240