Adam has some green stickers and blue stickers.
If Adam receives another 345 blue stickers,
the green stickers will be 20% as many as the blue stickers.
If Adam receives another 45 green 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	5 u - 345	4 p - 45	5 p
Change	No change	+ 345	+ 45	No change
After	1 u	5 u	4 p	5 p

(a)
20% = ²⁰₁₀₀ = ¹₅
80% = ⁸⁰₁₀₀ = ⁴₅

Scenario 1
Number of green stickers at first = 1 u
Number of blue stickers at first = 5 u - 345

Scenario 2
Number of green stickers at first = 4 p - 45
Number of blue stickers at first = 5 p

1 u = 4 p - 45 --- (1)
5 u - 345 = 5 p --- (2)

(2) _{÷ 5}
1 u - 69 = 1 p
1 u = 1 p + 69 --- (3)

(1) = (3)
4 p - 45 = 1 p + 69
4 p - 1 p = 45 + 69
3 p = 114

1 p = 114 ÷ 3 = 38

Number of green stickers
= 4 p - 45
= 4 x 38 - 45
= 152 - 45
= 107

(b)
Number of blue stickers
= 5 p
= 5 x 38
= 190

Answer(s): (a) 107; (b) 190