Vanessa and Jean collected stickers. Vanessa gave 30% of her stickers to Jean and as a result, Jean's stickers increased by 25%. If Vanessa had 42 stickers left, find the number of stickers Jean should give to Vanessa in the end so that both had an equal number of stickers.

	Vanessa	Jean	Comparing the change in Jean's stickers
Before	10x1 = 10 u		4x3 = 12u
Change	- 3x1 = - 3 u	+ 3x1 = + 3 u	+ 1x3 = + 3 u
After	7x1 = 7 u		5x3 = 15 u

30% = ³⁰₁₀₀ = ³₁₀
25% = ²⁵₁₀₀ = ¹₄

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

7 u = 42

1 u = 42 ÷ 7 = 6

Number of stickers that Jean had more than Vanessa in the end
= 15 u - 7 u
= 8 u

Number of stickers that Jean should give to Vanessa so that both had an equal number of stickers in the end
= 8 u ÷ 2
= 4 u
= 4 x 6
= 24

Answer(s): 24