Elitmus
Exam
There is csk full of milk.'E' litres are drawn from the cask and replaced by water.this process is repeated.now the ration of milk and water in cask is 16:9.what is capacity of cask in litres
Read Solution (Total 8)
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- capacity 5E
milk finally +nt= 16/25
x(4/5)*(4/5) implies (1/5)*x was drawn in each turn...
x/5=E thus x=5E - 11 years agoHelpfull: Yes(10) No(1)
- total milk=xE liters
after first replacement milk=(x-1)E and water= E
after second replacement milk=(x-2)E and water=2E
ratio= (x-2)E/2E=16/9
X=50/9E liters - 11 years agoHelpfull: Yes(9) No(4)
- cant be determined
bcz....no. of repetation is nt given
- 11 years agoHelpfull: Yes(6) No(3)
- x=5E.
let cask capacity be x
(x*(x-E)/x*(x-E)/x)/((x-(x*(x-E)/x*(x-E)/x))=16/9 - 11 years agoHelpfull: Yes(2) No(0)
- The total capacity is 5l and E=1.
By Assuming Total value as X and replaced value as E and putting in [X(1-(Y/X)^n]
we get
[X(1-(E/X)^2] would be value or remaining milk
and so Water added would be X-[X(1-(Y/X)2] (Total capacity- Milk present=Water)
And putting against the given ratio of 16:9
X-[X(1-(Y/X)2]/X-[X(1-(Y/X)2]=16/9
Solving would give the result of X=5 and E=1
:) - 11 years agoHelpfull: Yes(2) No(1)
- E=(9/25)X
Solve for any values of E and X - 11 years agoHelpfull: Yes(1) No(0)
- answer is 7 ltr.
let capacity of cask is y ltr,when the 1st time E ltr milk is replaced by water,then the ratio becomes (y-E)/E,next time ratio becomes (y-E)^2/E^2 & so on as we know that 9 is the square of 3,and 9 has no other power of any no,so e=3 and y-3=4 hence y=7 ltr. - 11 years agoHelpfull: Yes(1) No(1)
- capacity = 25*E/9
- 11 years agoHelpfull: Yes(1) No(1)
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