The amount of water (in ml) that should be added to reduce9 ml lotion, containing 50% alcohol,to a lotion containing 30% alcohol, is:

  • Option 1)

    5 ml    

  • Option 2)

    2 ml    

  • Option 3)

    3 ml    

  • Option 4)

    6 ml

  • Option 5)

    4 ml    

Answers (1)

9 ml solution = 50 % alcohol = 4.5 ml

Let x\: ml added (4.5 + x) = water and alcohol \frac{4.5}{9}+x = \frac{30 }{100}

45 = 27+3x

X= 6ml

Boost your Preparation for JEE Main 2021 with Personlized Coaching
 
Exams
Articles
Questions