CAT Quantitative Ability Questions | CAT Algebra questions
CAT/1994
Question . 200
Along a road lie an odd number of stones placed at intervals of 10 m. These stones have to be assembled around the middle stone. A person can carry only one stone at a time. A man carried out the job starting with the stone in the middle, carrying stones in succession, thereby covering a distance of 4.8 km. Then the number of stones is
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Method of solving this CAT Quantitative Ability Question from Algebra question
(d) Suppose there are n stones are placed. So, there are (2n + 1) stones, on each side of middle stone To pick up and return at middle point the man will travel 20m for 1st, 40 m for 2nd, and so on. Therefore total distance (4.8 km) is given by
