A person is to go up a tree 60 ft high. In every second, he climbs 5 ft but slips 4 ft. After how many seconds, will he be able to touch the top of the tree
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In every sec, he covers 1 ft.
In 55 secs , he will cover , 55 ft.
In next 56th sec, he will touch 55+5= 60 FT TOP.
SO 56 Secs.
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