Adam has some green stickers and blue stickers.
If Adam gives away 24 green stickers,
the green stickers will be 10% as many as the blue stickers.
If Adam gives away 600 blue stickers,
the green stickers will be 80% as many as the blue stickers.

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

	Scenario 1		Scenario 2
	Green	Blue	Green	Blue
Before	1 u + 24	10 u	4 p	5 p + 600
Change	- 24	No change	No change	- 600
After	1 u	10 u	4 p	5 p

(a)
10% = ¹⁰₁₀₀ = ¹₁₀
80% = ⁸⁰₁₀₀ = ⁴₅

Scenario 1
Number of green stickers at first = 1 u + 24
Number of blue stickers at first = 10 u

Scenario 2
Number of green stickers at first = 4 p
Number of blue stickers at first = 5 p + 600

1 u + 24 = 4 p --- (1)
10 u = 5 p + 600 --- (2)

(1) _{x 10}
10 u + 240 = 40 p
10 u = 40 p - 240 --- (3)

(3) = (2)
40 p - 240 = 5 p + 600
40 p - 5 p = 240 + 600
35 p = 840

1 p = 840 ÷ 35 = 24

Number of green stickers
= 4 p
= 4 x 24
= 96

(b)
Number of blue stickers at first
= 5 p + 600
= 5 x 24 + 600
= 120 + 600
= 720

Answer(s): (a) 96; (b) 720