Nora baked 144 croissants. ⁵₈ of the croissants were strawberry croissants. The rest were chocolate croissants. She gave an equal number of strawberry croissants and chocolate croissants away and had 5 times as many strawberry croissants as chocolate croissants left. How many croissants did she give away?

	Strawberry croissants	Chocolate croissants	Difference
Before	5x2 = 10 u	3x2 = 6 u	2x2 = 4 u
Change	- 5 u	- 5 u
After	5x1 = 5 u	1x1 = 1 u	4x1 = 4 u

Since Nora gave away an equal number of strawberry croissants and chocolate croissants, the difference in the number of strawberry croissants and chocolate croissants remains unchanged.  Make the difference in the strawberry croissants and chocolate croissants the same.  LCM of 2 and 4 is 4.

Total number of croissants at first
= 10 u + 6 u
= 16 u

16 u = 144

1 u = 144 ÷ 16 = 9

Number of croissants that Nora gave away
= 5 u + 5 u
= 10 u
= 10 x 9 
= 90

Answer(s): 90