Gabby and Pamela collected stickers. Gabby gave 30% of her stickers to Pamela and as a result, Pamela's stickers increased by 10%. If Gabby had 28 stickers left, find the number of stickers Pamela should give to Gabby in the end so that both had an equal number of stickers.

	Gabby	Pamela	Comparing the change in Pamela's stickers
Before	10x1 = 10 u		10x3 = 30u
Change	- 3x1 = - 3 u	+ 3x1 = + 3 u	+ 1x3 = + 3 u
After	7x1 = 7 u		11x3 = 33 u

30% = ³⁰₁₀₀ = ³₁₀
10% = ¹⁰₁₀₀ = ¹₁₀

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

7 u = 28

1 u = 28 ÷ 7 = 4

Number of stickers that Pamela had more than Gabby in the end
= 33 u - 7 u
= 26 u

Number of stickers that Pamela should give to Gabby so that both had an equal number of stickers in the end
= 26 u ÷ 2
= 13 u
= 13 x 4
= 52

Answer(s): 52