Aptitude - Ratio and Proportion - Discussion

Discussion Forum : Ratio and Proportion - General Questions (Q.No. 5)
5.
In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:
20 litres
30 litres
40 litres
60 litres
Answer: Option
Explanation:

Quantity of milk = 60 x 2 litres = 40 litres.
3

Quantity of water in it = (60- 40) litres = 20 litres.

New ratio = 1 : 2

Let quantity of water to be added further be x litres.

Then, milk : water = 40 .
20 + x

Now, 40 = 1
20 + x 2

20 + x = 80

x = 60.

Quantity of water to be added = 60 litres.

Discussion:
153 comments Page 12 of 16.

PALLAV said:   9 years ago
Yes, correct @Sushil.

Sunil said:   9 years ago
Milk 40, 2.
Water 20,1.
To make water double as milk we should add 60.
Then 60+20=80, I.e double to 40(milk).

Poorvi said:   9 years ago
Easy method to find the quantity of ratio 2 : 1,
2x+1x = 60,
3x = 60,
X = 20, then 2x = 40,
40 + 20 = 60.

Shoaib said:   9 years ago
Just make it simple.

If the quantity of milk remains same 40.
And the new ratio is 1:2.
It means water is double then milk according to ratio then we have 40:80. And, minus the old water means 80-20 = 60.

Amit kumar said:   9 years ago
@ALL.

The initial ratio 2:1 and after that 1:2 its only possible when the same amount of liquid is added in the mixture. That's it.

Koushikk said:   9 years ago
In question, they have mentioned if this ratio is to be..

Does that mean 2: 1 to be simply changed to 1:2 why did they link both? Please explain me.

Shelly said:   9 years ago
Water= 1+2 = 3 => 3 * 60
= 3*60/3= 60 liter.

Koshik said:   9 years ago
@Santan,

Simple and easy explanation, Thanks.

Priya said:   9 years ago
You are right @Ramesh.

But they didn't mention that the 2nd statement 1:2 Is related to the 1st statement, then how you are relating?

Palak said:   9 years ago
Please give me the answer of.

Find compound interest paid when a sum of rupees 10000 is invested for 1 year and 3 month at 81/2 % per annum compound annually.


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