Adam has some blue stickers and green stickers.
If Adam gives away 24 blue stickers,
the blue stickers will be 20% as many as the green stickers.
If Adam gives away 25 green stickers,
the blue stickers will be 40% as many as the green stickers.

1. How many blue stickers are there? 
2. How many green stickers are there? 

	Scenario 1		Scenario 2
	Blue	Green	Blue	Green
Before	1 u + 24	5 u	2 p	5 p + 25
Change	- 24	No change	No change	- 25
After	1 u	5 u	2 p	5 p

(a)
20% = ²⁰₁₀₀ = ¹₅
40% = ⁴⁰₁₀₀ = ²₅

Scenario 1
Number of blue stickers at first = 1 u + 24
Number of green stickers at first = 5 u

Scenario 2
Number of blue stickers at first = 2 p
Number of green stickers at first = 5 p + 25

1 u + 24 = 2 p --- (1)
5 u = 5 p + 25 --- (2)

(1) _{x 5}
5 u + 120 = 10 p
5 u = 10 p - 120 --- (3)

(3) = (2)
10 p - 120 = 5 p + 25
10 p - 5 p = 120 + 25
5 p = 145

1 p = 145 ÷ 5 = 29

Number of blue stickers
= 2 p
= 2 x 29
= 58

(b)
Number of green stickers at first
= 5 p + 25
= 5 x 29 + 25
= 145 + 25
= 170

Answer(s): (a) 58; (b) 170