Dr. Jane once planted a strange looking plant in the middle of his garden. The plat grew at a very high speed and doubled in size every day. After five days, Jane asked Holmes if he could tell him that how many days the plant will take to cover half the garden if it takes a span of twenty days to cover the entire garden. Sherlock Holmes, brainy and witty, gave Jane the accurate answer right away! What is the correct answer?
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If the plant takes 20 days to cover the entire garden, it will take 19 days to cover half of it.
Suppose it took the plant 50 days to cover the entire garden how long would it take to cover half the garden?
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