On a straight road XY, 100 metres long, five heavy stones are placed two metres apart beginning at the end X. A worker, starting at X, has to transport all the stones to Y, by carrying only one stone at a time. The minimum distance he has to travel (in metres) is
Explanation:
The minimum distance to be walked is
100 (onward)+ 98 (return) + 98 (onward) + 96 (return) + 96( onward) + 94(return) + 94(onward) + 92(return) + 92(onward)
= 860 metres
Hence, option 1 is the correct answer.