a rapidly growing plant doubles in height each week. at the end of 25th day, the plant reaches the height of the building. at what time was the plant one-fourth the height of the building?

Dear student,
in 7 days height got double if the height of the building be h then the plant be h/2   7 days back that is 18th day .the plant height would be h/4 7 days back from the day it have height h/2 that  is 18th .so the height of the plant h/4 will be at 18-7=11 th day .11thh day Regards

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Ans will be 23rd Day
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