Ⅰ. x 3 - 371 = 629 Ⅱ. y 3 - 543 = 788

According to given question , we have
Ⅰ. x³ - 371 = 629
⇒ x = √1000 = 10
Ⅱ. y³ - 543 = 788
⇒ y = √1331 = 11
From above both equations it is clear that x < y is correct answer .