Valen had 143 pomegranates and 56 starfruits at first. He used ³₁₁ of the pomegranates and ⁵₇ of the starfruits. He then bought some more starfruits. In the end, ¹₇ of the fruits he had left were pomegranates. How many starfruits did he buy?

	Pomegranates	Starfruits	Total
Before	143	56
Change 1	- 39	- 40
After 1	104	16
Change 2		+ some
After 2	1 u	6 u	7 u

Number of pomegranates that Valen used
= ³₁₁ x 143
= 39

Number of pomegranates that Valen had left
= 143 - 39
= 104

Number of starfruits that Valen used
= ⁵₇ x 56
= 40

Number of starfruits that Valen had left
= 56 - 40
= 16

Fraction of the fruits left that were starfruits
= 1 - ¹₇
= ⁶₇

Number of pomegranates left = 1 u = 104

Number of starfruits left in the end
= 6 u
= 6 x 104
= 624

Number of starfruits that Valen bought
= 624 - 16
= 608

Answer(s): 608