Min and Jen collected stickers. Min gave 25% of her stickers to Jen and as a result, Jen's stickers increased by 30%. If Min had 54 stickers left, find the number of stickers Jen should give to Min in the end so that both had an equal number of stickers.

	Min	Jen	Comparing the change in Jen's stickers
Before	4x3 = 12 u		10x1 = 10u
Change	- 1x3 = - 3 u	+ 1x3 = + 3 u	+ 3x1 = + 3 u
After	3x3 = 9 u		13x1 = 13 u

25% = ²⁵₁₀₀ = ¹₄
30% = ³⁰₁₀₀ = ³₁₀

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

9 u = 54

1 u = 54 ÷ 9 = 6

Number of stickers that Jen had more than Min in the end
= 13 u - 9 u
= 4 u

Number of stickers that Jen should give to Min so that both had an equal number of stickers in the end
= 4 u ÷ 2
= 2 u
= 2 x 6
= 12

Answer(s): 12