80% of the mini cupcakes in Packet M were cheese mini cupcakes and the rest were banana mini cupcakes. Packet N had 30% more cheese mini cupcakes than Packet M and twice as many mini cupcakes than the total number of mini cupcakes in Packet M. Find the percentage of the banana mini cupcakes in Packet N that would need to be transferred into Packet M, so that there were an equal number of cheese and banana mini cupcakes in Packet M.

	Packet M		Packet N
	Cheese	Banana	Cheese	Banana
	5 u		10 u
Before	4 u	1 u	5.2 u	4.8 u
Change		+ 3 u		- 3 u
After	4 u	4 u	5.2 u	1.8 u

80% = ⁸⁰₁₀₀ = ⁴₅
100 %+ 30% = 130%

 Total number of mini cupcakes in Packet M
= 4 u + 1 u
= 5 u

Total number of mini cupcakes in Packet N
= 2 x 5 u 
= 10 u

Number of cheese mini cupcakes in Packet N
= 130% x 4 u
=  ¹³⁰₁₀₀ x 4 u
= 5.2 u

Number of cheese mini cupcakes in Packet N
= 10 u - 5.2 u
= 4.8 u

Number of banana mini cupcakes to be transferred from Packet N to Packet M
= 4 u - 1 u
= 3 u

Percentage of mini cupcakes to be transferred from Packet N
= ³_4.8 x 100%
= 62.5%

Answer(s): 62.5%