A frog has fallen in a well of 30 feet depth. Everyday it climbs 3 feet and skids 2 feet at night. How many days will it take to come out of the well. (A) 29 days (B) 28 days (C) 26 days (D) 30 days
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Answer:
per it climbs= 3ft
per day it slips=2ft
per day it moves = 3ft-2ft=1ft
distance =30ft
no. of days = 30÷1 = 30
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