A store owner has 56 more mangosteens than passion fruits. After he sold 75% of the mangosteens and 30% of the passion fruits, he is left with 4 more passion fruits than mangosteens. What fraction of the fruits left were passion fruits?

	Mangosteens		Passion fruits
Comparing mangosteens and passion fruits at first	56 more
Before	4x5 = 20 u	+ 56	10x2 = 20 u
Change	- 3x5 = - 15 u	- 42	- 3x2 = - 6 u
After	1x5 = 5 u	+ 14	7x2 = 14 u
Comparing mangosteens  and passion fruits in the end			4 more

75% = ⁷⁵₁₀₀ = ³₄ 
75% x 56 = ³₄ x 56 = 42
56 - 42 = 14

30% = ³⁰₁₀₀ = ³₁₀ 

The number of passion fruits is 4 more than the number of mangosteens in the end. So, if another 4 mangosteens are added, the number of mangosteens and passion fruits in the end will be the same.

5 u + 14 + 4 = 14 u
5 u + 18 = 14 u
14 u - 5 u = 18
9 u = 18

1 u = 18 ÷ 9 = 2

Number of passion fruits left
= 14 u
= 14 x 2
= 28

Total number of fruits left
= 5 u + 14 + 14 u
= 19 u + 14
= 19 x 2 + 14
= 38 + 14
= 52

^{Passion fruits left}_{Total fruits left} = ²⁸₅₂ = ⁷₁₃

Answer(s): ⁷₁₃