Tiffany baked 40 wafers. ³₅ of the wafers were peach wafers. The rest were chocolate wafers. She gave an equal number of peach wafers and chocolate wafers away and had 5 times as many peach wafers as chocolate wafers left. How many wafers did she give away?

	Peach wafers	Chocolate wafers	Difference
Before	3x4 = 12 u	2x4 = 8 u	1x4 = 4 u
Change	- 7 u	- 7 u
After	5x1 = 5 u	1x1 = 1 u	4x1 = 4 u

Since Tiffany gave away an equal number of peach wafers and chocolate wafers, the difference in the number of peach wafers and chocolate wafers remains unchanged.  Make the difference in the peach wafers and chocolate wafers the same.  LCM of 1 and 4 is 4.

Total number of wafers at first
= 12 u + 8 u
= 20 u

20 u = 40

1 u = 40 ÷ 20 = 2

Number of wafers that Tiffany gave away
= 7 u + 7 u
= 14 u
= 14 x 2 
= 28

Answer(s): 28