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Edoua
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Quote:

All
Q 14) 4/5 of can with Milk and the remaining with water —-> 1/5 with water

M/W = 4/1 —- -> M/W =4x/x
He removes 10l to replace with 10 litres of water
The removed 10l contains 8l of M and 2l of W

Water in the final mixture is 33,33% =1/3 - -> Milk is 66,66 =2/3

Ration in the final solution is M/W= 2/1

We have
4x-8/(x-2+10) =2/1
Then x =12
Milk is 4x=48

Total 5x= 60

Quote:

All
Q 14) 4/5 of can with Milk and the remaining with water —-> 1/5 with water

M/W = 4/1 —- -> M/W =4x/x
He removes 10l to replace with 10 litres of water
The removed 10l contains 8l of M and 2l of W

Water in the final mixture is 33,33% =1/3 - -> Milk is 66,66 =2/3

Ration in the final solution is M/W= 2/1

We have
4x-8/(x-2+10) =2/1
Then x =12
Milk is 4x=48

Total 5x= 60

Quote:

All
Q11) apply alligation technique you will get n1/30=(8/140)*(14/1) =8/10
n1=24

Quote:

All
Q11) apply alligation technique you will get n1/30=(8/140)*(14/1) =8/10
n1=24
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WA@htx1383
And

Ans E

30 litres , of which 70% is milk = 70%(30) = 21 milk, rest is water 9 litre. We are adding some litres say x, which has milk and water in the ratio 4:3. Thus the milk ratio is 4/7 and water ratio is 3/7 . More over the final milk ratio is 9/14. So let’s focus on milk component alone. Which gives the equation as :

( 21+ (4/7)*x )/ ( 30+x) = 9/14 solving we get 24

WA@htx1383
Is the answer D. Water to milk is 49: 51

Here the quantity remains the same. No change that’s 20 litres. Removal and addition doesn’t affect the volume. 20 litres milk. U remove 4 litres. Fraction removed = 4/20 = 1/5. Water added isn
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Kindly correct if my answer is wrong.
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Quote:

*Dereno writes:*
Here the quantity remains the same. No change that’s 20 litres. Removal and addition doesn’t affect the volume. 20 litres milk. U remove 4 litres. Fraction removed = 4/20 = 1/5. Water added isn
Answer to Q 12) anyone?

Quote:

*Dereno writes:*
Here the quantity remains the same. No change that’s 20 litres. Removal and addition doesn’t affect the volume. 20 litres milk. U remove 4 litres. Fraction removed = 4/20 = 1/5. Water added isn
Answer to Q 12) anyone?
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WA@htx1383
Ans D.

WA@htx1383
Is the answer B ?
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Because a 16.66% (1/6) increase of profit is got by (1/7) decrease in the qty of wine. Which is water being compensated for it. . So 1:7. But let’s wait for answer
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I'd suggest practicing proper GMAT questions on mixtures:

DS Mixtures Questions
PS Mixtures Questions
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Dereno
Because a 16.66% (1/6) increase of profit is got by (1/7) decrease in the qty of wine. Which is water being compensated for it. . So 1:7. But let’s wait for answer
If the profit is incresed by 16 2/3 which means 1/6 of original it means 1/6 of water is added.
there fore water : wine = 1/6 : 1 = 1:6
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Dereno,

\
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Hello everyone :)! Here is today’s (May 26) DI Butler Question: an-arithmetic-sequence-is-such-that-the-division-of-the-fifth-term-by-445639.html#p3574572
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Q.13 Below is my approach.
Let the quantities be x and y.
(5/9)x + (8/15)y = 13/24(x+y)
On simplifying it becomes:
x/(x+y) = 3/8
Therefore, answer must be option E 3:5.
Is there any simpler solution, other than solving equation.?
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Hi, anyone knows where we can practice official questions under timed conditions? For verbal especially
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Problem Solving Butler: May 2025
May 27PS 1PS 2

________________________________
PS 1
Two identical urns—black and white—each contain 5 blue, 5 red and 10 green balls. Every ball selected from the black urn is immediately returned to the urn, while each ball selected from the white urn is removed and placed on a table. If Jenny receives a quarter for every blue ball, a dime for every red ball and a nickel for every green ball she selects, what is the probability that she will be able to buy a 25-cent candy bar with the proceeds from drawing four balls—two from each urn?

A) 143/152
B) 143/154
C) 121/180
D) 271/965
E) 152/1000

________________________________
PS 2

If each day a tree loses half its remaining leaves, what fraction of its leaves will it have lost after 5 days ?

(A) 1/32
(B) 1/16
(C) 9/10
(D) 15/16
(E) 31/32
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Critical Reasoning Butler: May 2025
May 27CR 1CR 2

_________________________________
CR 1

While cooking pasta, most Italian chefs add some cooking oil. The reason for this is not difficult to ascertain. Oil by nature is a greasy substance so the use of cooking oil prevents the pasta from sticking to the utensil its being cooked in.

Which of the following, if true, most seriously calls into question the explanation above?

(A) The oil used most often by Italian chefs for cooking is olive oil, which has a neutral taste.

(B) While it is being cooked, the pasta never comes in contact with the oil.

(C) There are some Italian chefs who do not use cooking oil while cooking pasta.

(D) If added in large quantities, the cooking oil can spoil the taste of the pasta.

(E) To provide added taste is not the reason why cooking oil is added to pasta while it is being cooked.
_________________________________
CR 2

Clerical workers show more signs of stress during the work day than those in executive or higher positions. According to the findings of a study, employees on the lower levels of job hierarchy had higher blood pressure and increased heart rate in the mornings. They also had higher average levels of the stress hormone Cortisol throughout the day.

Each of the following is an assumption in the argument, EXCEPT:

(A) The study is representative of all employees in general.

(B) High blood pressure cannot be caused by factors other than stress.

(C) The hormone Cortisol does not itself cause stress.

(D) Increased heart rate is a sign of stress.

(E) The higher average salary and, in general, better lifestyle of the employees at the executive and higher positions, to an extent, insulates them from stress.
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