How many liters of 20% alcohol should be mixed with 60 % alcohol to get 32% alcohol
(1) We get 70 liters of 32% alcohol
(2) We used 21 lit of 60% alcohol, to prepare 32%
A if the question can be answered by using one of the statements alone, but cannot be answered by using the other statements alone
B if the question can be answered by using either statement alone
C if the question can be answered by using both statements together,but cannot be answered by using either statement alone
D if the question cannot be answered even by using both the statements together

• (B)
  20 60
  32
  28 12
  so the mixture will be in 28:12 ratio => 7:3 ratio
  (1) if we have 70 liters of 32% alcohol that means we have 70*(7/(7+3)) liter = 49 liter of 20% alcohol
  (2) if we have 21 liter of 60% alcohol that means 3x = 21(from the ratio)
  => x = 7
  so we have 7 * 7(from ratio) liter of 20% of alcohol
  
  so both statement alone is sufficient
  that means Ans. B is correct
• 8 years agoHelpfull: Yes(28) No(2)
• (B)
  20 60
  32
  28 12
  so the mixture will be in 28:12 ratio => 7:3 ratio
  (1) if we have 70 liters of 32% alcohol that means we have 70*(7/(7+3)) liter = 49 liter of 20% alcohol
  (2) if we have 21 liter of 60% alcohol that means 3x = 21(from the ratio)
  => x = 7
  so we have 7 * 7(from ratio) liter of 32% of alcohol
  
  so both statement alone is sufficient
  that means Ans. B is correct
  
• 8 years agoHelpfull: Yes(5) No(1)
• option c..
  the equation formed will be
  0.2x+ 0.6y = .32z
  where x is amout of 20% sol
  y is amount of 60% sol
  and z is amount of 32% sol
  we can only find x by putting both the values of y and z from both the statements...
• 8 years agoHelpfull: Yes(1) No(4)
• From statement 1 : The final output is 70 ltr 32% alcohal
  so the final alcohal content is : 70 x .32 ltr = 22.4 ltr
  From statement 2: 21 litre 60% alcohal was used.
  so the initial alcohal content was: 21 x .6 = 12.6
  The rest alcohal (22.4 - 12.6) = 9.8 ltr comes from 20% content.
  The 20% content alcohal volume should be from (70 - 21) = 49 ltr
  so its 20% alcohal will be .2 x 49 = 9.8 ltr hence satisfied
  So both the statement are sufficient . [C]
• 6 years agoHelpfull: Yes(0) No(0)