A store owner has 40 less oranges than passion fruits. After he sold 75% of the oranges and 10% of the passion fruits, he is left with 94 less oranges than passion fruits. What fraction of the fruits left were oranges?

	Oranges		Passion fruits
Comparing oranges and passion fruits at first			40 less
Before	4x5 = 20 u	+ 40	10x2 = 20 u
Change	- 3x5 = - 15 u	- 30	- 1x2 = - 2 u
After	1x5 = 5 u	+ 10	9x2 = 18 u
Comparing oranges  and passion fruits in the end	94 less

75% = ⁷⁵₁₀₀ = ³₄ 
75% x 40 = ³₄ x 40 = 30
40 - 30 = 10

10% = ¹⁰₁₀₀ = ¹₁₀ 

The number of oranges is 94 less than the number of passion fruits in the end. So, if another 94 oranges are added, the number of oranges and passion fruits in the end will be the same.

5 u + 10 + 94 = 18 u
5 u + 104 = 18 u
18 u - 5 u = 104
13 u = 104

1 u = 104 ÷ 13 = 8

Number of oranges left
= 5 u + 10
= 5 x 8 + 10
= 40 + 10
= 50

Total number of fruits left
= 5 u + 10 + 18 u
= 23 u + 10
= 23 x 8 + 10
= 184 + 10
= 194

^{Oranges left}_{Total fruits left} = ⁵⁰₁₉₄ = ²⁵₉₇

Answer(s): ²⁵₉₇