Question no. 8 correct solution..

by Deepak
(Agra, Uttar pradesh, India)

I think the question is solved wrong...


the correct solution is like this...


the emptying pipe empty the tank in 8 min it means, it empty 1/8 per min and the filling pipe fill at the rate of 1/15 , so the actual rate of emptying the tank is .. (1/8)-(1/15) =7/90 = 1/12.9 , it means it 12.9 min to empty the full tank , so it would take 12.9/2 = 6.45 min to empty the half tank .. duh..

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to views.

Recent Articles

  1. How Can Reading Improve Your Emotional Intelligence? Science Reveals!

    Apr 23, 18 02:58 PM

    The research has proved that literary fiction is helpful to improve your emotional intelligence. There are 1+4 tips to make up your EQ fast.

    Read More

  2. Being Forgetful Makes Your Brain to Work Properly

    Apr 16, 18 04:04 PM

    Do you face lapses of memory? Some psychologists and scientists consider being forgetful a healthy sign.

    Read More

  3. How Bell Curve Promotes Racism? Cracks in the Bell Curve Reopened!

    Apr 14, 18 06:52 AM

    Murray's Bell Curve has been under fire since it was published. However, it has gained new hights of controversy recently and re-opened cracks in the bell curve.

    Read More