A multistory building has 105 storeys ,every floor of it a 4m high .if a baloon rises 3m every second ,how long will it take to rise from 36th floor to the 96th floor?
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36th to 96 th → 60 floors→ 60*4= 240M
time= 240/3= 80 seconds
time= 240/3= 80 seconds
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