a rapidly growing plant doubles in height each week at the end of 25th day, the plant reaches the - Physics - Kinematics

Question

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?

Shobhit Mittal · Accepted Answer

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

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?