Tuesday, January 17, 2012

Simple Ratio problem that often confuses

Sum of three nos is 98. The ratio between 1 and 2 is 2:3. The ratio between 2 and 3 is 5:8 .
Find the second no?


Answer is simple:

Let x,y,z be numbers.
x/y=2/3 , So, 3x=2y. And y/z=5/8 , So 8y=5z
Sum is 98, So 2y/3+y+8y/5=98. Therefore y=30
Numbers are 20,30,48

5 comments:

  1. HI
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    ReplyDelete
  2. Hi there,
    Simple Ratio problem that often confuses
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    ReplyDelete
  3. one of the Ratio based que which come in every exams, good for practice

    ReplyDelete