I got this question from a friend who got this from his local GMAT prep tutor.
Question: Two men A and B, purchase a grindstone 30 cm in diameter for $12, of which A pays $7 and B pays $5. Now supposing the inner most 10cm of the diameter as useless, how many centimeters of the radius may A grind down before sending the grindstone to B?![]()
Question: Two men A and B, purchase a grindstone 30 cm in diameter for $12, of which A pays $7 and B pays $5. Now supposing the inner most 10cm of the diameter as useless, how many centimeters of the radius may A grind down before sending the grindstone to B?
