Accenture Company Numerical Ability Alligation or Mixture

A certain quantity of 45% solution is replaced with 30% solution such that the new concentration is 35%. What is the fraction of the solution that was replaced?
A)1/4 B)1/3 C)1/2 D)2/3 E)3/4

Read Solution (Total 2)

Consider a solution = 1 ltr
X is the certain quantity which has to be replaced
Now,
45%of (1-x)+(30%of x)=35/100
=> 45/100 * (1-x) + 30x/100 = 35/100
=> 45/100 - 45x/100 + 30x/100 = 35/100
=> x = 2/3
3 years agoHelpfull: Yes(1) No(0)

Formual is A2-Max/Max-A1
45-35/35-30=2
But they asked fraction so answer is 1/2
4 years agoHelpfull: Yes(0) No(2)

Accenture Other Question

If the price of gold increases by 40%, find by how much the quantity of ornaments must be reduced so that the expenditure may remain the same as before?
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A)108 min B)154 min C)144 min D)120 min