Jaslyn bought a total of 32 big and small chocolate bars. Then she decided to exchange 50% of her big chocolate bars for the small ones in the ratio of 1 : 4. After the exchange, she had 44 chocolate bars. What percentage of the chocolate bars she bought were small ones?

	Big chocolate bars	Small chocolate bars	Total
Before	2 u	?	32
Change	- 1 u
Comparing big and small chocolate bars at exchange	- 1 u	+ 4 u	+ 12
After	1 u	?	44

50% = ⁵⁰₁₀₀ = ¹₂

The number of big chocolate bars that were exchanged for small chocolate bars was repeated.  

Number of extra chocolate bars that Jaslyn received due to the exchange
= 4 u - 1 u
= 3 u

3 u = 44 - 32
3 u = 12

1 u = 12 ÷ 3 = 4

Number of small chocolate bars at first
= 32 - 2 u
= 32 - 2 x 4
= 32 - 8
= 24

Percentage of the chocolate bars Jaslyn bought that were small ones
=  ²⁴₃₂ x 100%
= 75% 

Answer(s): 75%