In a mixture, R is 2 parts S is 1 part. In order to make S to 25% of the mixture, how much r is to be added?

One Part
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kanchana

  • Jul 15th, 2005
 

how can we get answer as 1 part???Explain

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Priya Goyal

  • Jul 16th, 2005
 

suppose 25% =1 
then 75% =3 
means 100% =4 
 
is S=1 then R will be 3 for 100% 
now R=2 so add 1 partof R

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yours lovingly

  • Jan 29th, 2006
 

sorry for the interruptAnswer for ur question:R=2,S=1 inorder to make s=25% in this solution currently s=1 part (ie,1/3 of the solution )have 33.333% in it,so when adding R=1 part of the solution we have S=1/4 of the total solution since we have s=25%

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Prashant202185

  • Sep 24th, 2008
 

since R= 2 parts

and S = 1 parts

so % of s = 1/3*100 = 33.33%

Let x of r is added to make S to 25%

then 1/(3+x)*100 = 25
         
   => 75+25x=100


        so x= 1  ans

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velusara

  • Nov 18th, 2010
 

Ans = R should be added with 50%


If r is 2 parts S is 1 part i.e 2/1 = 1 or 1+1 = 2

so if s increases by 25% of 1 then it is 1.25 + 1.25 = 2.5 that is r

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