Simon had 176 mangoes and 126 passion fruits at first. He used ³₁₁ of the mangoes and ³₇ of the passion fruits. He then bought some more passion fruits. In the end, ¹₈ of the fruits he had left were mangoes. How many passion fruits did he buy?

	Mangoes	Passion Fruits	Total
Before	176	126
Change 1	- 48	- 54
After 1	128	72
Change 2		+ some
After 2	1 u	7 u	8 u

Number of mangoes that Simon used
= ³₁₁ x 176
= 48

Number of mangoes that Simon had left
= 176 - 48
= 128

Number of passion fruits that Simon used
= ³₇ x 126
= 54

Number of passion fruits that Simon had left
= 126 - 54
= 72

Fraction of the fruits left that were passion fruits
= 1 - ¹₈
= ⁷₈

Number of mangoes left = 1 u = 128

Number of passion fruits left in the end
= 7 u
= 7 x 128
= 896

Number of passion fruits that Simon bought
= 896 - 72
= 824

Answer(s): 824