Monday, March 10, 2014
Kentertainment, Term 1, Week 7 (from KenKen.com)
A ship anchored in a port has a ladder, which hangs over the side of the boat. The length of the ladder is 200cm, the distance between each rung is 20 cm and the bottom rung touches the water. The tide rises at a rate of 10cm per hour. When will the water reach the fifth rung?
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