Latest IBM Aptitude Question SOLUTION: one container of a production line solvent is mixed at 20% strenth and another is mixed at 54% strenth .To obtain 7 liters of a mixture that is 38% strenth ,how mny liters should u

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one container of a production line solvent is mixed at 20% strenth and another is mixed at 54% strenth .To obtain 7 liters of a mixture that is 38% strenth ,how mny liters should used from the container tht is mixed at 54% strenth?

Asked In IBM srilatha (12 years ago)

Solved Dhaval Vaghasiya Read Solution (3)

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Read Solution (3) :

Dhaval Vaghasiya  (12 years ago)

let 20% solution is x liter,
then 54% solution is 7-x liter for 7 liter solution

reqired average solution is 38%

therefore,

20x+54(7-x)=38*7
20x-54x=266-378
34x=112
x=3.29
thus 3.29 liter solution of 20% strength
and (7-3.29)=3.71 liter solution of 54% stregth

Is this solution Helpfull? Yes (20) | No (2)  

BK Singh  (9 years ago)

3.705 .

Is this solution Helpfull? Yes (1) | No   

saurav kumar  (7 years ago)

solve this question through alligation.
20(1st strength) 54(2nd strength)



38(final strength)

so by the rule of alligation

54-38=16
38-20=18
hence 8+9=17 parts.
but total 7litre.
so 17 part=7 litre
1 part= 7/17
hence 9 part will be
7/17*9=3.70 litre.

so

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