Min and Lynn collected stickers. Min gave 60% of her stickers to Lynn and as a result, Lynn's stickers increased by 20%. If Min had 18 stickers left, find the number of stickers Lynn should give to Min in the end so that both had an equal number of stickers.

	Min	Lynn	Comparing the change in Lynn's stickers
Before	5x1 = 5 u		5x3 = 15u
Change	- 3x1 = - 3 u	+ 3x1 = + 3 u	+ 1x3 = + 3 u
After	2x1 = 2 u		6x3 = 18 u

60% = ⁶⁰₁₀₀ = ³₅
20% = ²⁰₁₀₀ = ¹₅

The increase in the number of stickers that Lynn had is repeated.  Make the increase in the number of stickers that Lynn had the same. LCM of 3 and 1 = 3

2 u = 18

1 u = 18 ÷ 2 = 9

Number of stickers that Lynn had more than Min in the end
= 18 u - 2 u
= 16 u

Number of stickers that Lynn should give to Min so that both had an equal number of stickers in the end
= 16 u ÷ 2
= 8 u
= 8 x 9
= 72

Answer(s): 72