Cody had 80% fewer mini cupcakes than Luis. After Luis gave 297 mini cupcakes to Cody, Cody had ³₄ as many mini cupcakes as Luis. How many mini cupcakes did each of them have in the end?

1. Luis
2. Cody

	Cody	Luis	Total
Before	1x7 = 7 u	5x7 = 35 u	6x7 = 42 u
Change	+ 297	- 297
After	3x6 = 18 u	4x6 =  24 u	7x6 = 42 u

Number of mini cupcakes that Cody had at first in percentage
= 100% - 80%
= 20%

20% = ²⁰₁₀₀ = ¹₅

The total number of mini cupcakes at first and in the end remains unchanged. Make the total number of mini cupcakes the same. LCM of 7 and 6 is 42.

Number of mini cupcakes that Luis gave to Cody
= 35 u - 24 u
= 11 u

11 u = 297

1 u = 297 ÷ 11 = 27

Number of mini cupcakes that Cody had in the end
= 18 u
= 18 x 27
= 486

Number of mini cupcakes that Luis had in the end
= 24 u
= 24 x 27
= 648

Answer(s): (a) 486; (b) 648