Tammy made 22 more strawberry croissants than cheese croissants. After she gave away ²₅ of the strawberry croissants and ¹₈ of the cheese croissants, there were an equal number of strawberry croissants and cheese croissants left. How many strawberry croissants did she give away?

	Strawberry croissants	Cheese croissants	Difference
Before	5x7 = 35 u	8x3 = 24 u	11 u
Change	- 2x7 = - 14 u	- 1x3 = - 3 u
After	3x7 = 21 u	7x3 = 21 u

Fraction of strawberry croissants left
= 1 - ²₅
= ³₅

Fraction of cheese croissants left
= 1 - ¹₈
= ⁷₈

The number of strawberry croissants and cheese croissants in the end is the same. Make the numerators the same.  LCM of 7 and 3 is 21.

³₅ of strawberry croissants = ⁷₈ of cheese croissants
²¹₃₅ of strawberry croissants = ²¹₂₄ of cheese croissants

Number of more strawberry croissants than cheese croissants at first
= 35 u - 24 u
= 11 u

11 u = 22

1 u = 22 ÷ 11 = 2

Number of strawberry croissants that Tammy gave away
= 35 u - 21 u
= 14 u
= 14 x 2
= 28

Answer(s): 28