EXAMPLE 39 Along a road lie an odd number of stones placed at intervals of 10 metres. Thesestones have to be assembled around the middle stone. A person can carry only one stone at a time. Aman carried the job with one of the end stones by carrying them in succession. In carrying all the stoneshe covered a distance of 3 km. Find the number of stones.

EXAMPLE 39 Along a road lie an odd number of stones placed at interval

1.	EXAMPLE 39 Along a road lie an odd number of stones placed at intervals of 10 metres. Thesestones have to be assembled around the middle stone. A person can carry only one stone at a time. Aman carried the job with one of the end stones by carrying them in succession. In carrying all the stoneshe covered a distance of 3 km. Find the number of stones.
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