plz answer this question

[dr:esraa]

هى المسأله سهله جدا بس انا بأخد مع 2 مدرسين كل واحد مطلع اجابه مختلفه ,,,,,,
u-shape tube of area 2 cm square has an amount of water ... if 9 cm of kerosen has been poured in one side so height diff. of water im the two sides is 3.6 cm ..... find denisty of kerosen and volume of benzen poured in other side to make level of water becomes the same in the two sides (denisty of water is 1000 and denisty of nbenzen is 900 ) >>>>>> مستر مطلع كثافة الكيروسين 800 و التانى مطلعها 400 ؟؟؟؟؟ايه اللى صح ؟؟؟؟؟؟؟؟ يا ريت حد يرد