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 7 of 16.

Santan said:   1 decade ago
2:1 ratio of 60 litre is 40 litre milk and 20 litre water.

i.e 40:20
so to get the ratio 1:2 we should have 40:80
hence we have to add 80-20 (i.e 60) litre of water.

Chith said:   5 years ago
The initial quantity of milk=(2/3)*90 = 60,
Initial quantity of water=(1/3)*90 = 30,
If the ratio is to be 2:3 the water to be added;
(60÷(30+x)) = 2/3,
X = 60.
(6)

Souvik das said:   4 years ago
The ratio of milk and water in 60L is;
m=2.
w=1 (2+1)=3,
milk = 2/3, water=1/3.

milk in 60L = 2/3 * 60= 40L.
water in 60L = 1/3 * 60= 20L,
40:(20+60)=4:8= 1:2.
(9)

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.

Gokul said:   8 months ago
2x + x = 60,
x = 20.

Then milk =2*20 = 40,
water = 20.
New ratio=sum of mixtures(new)
1:2 = 40+20+x,
3x = 60+x,
x = 30.
Now, water to be added = 2 * 20 = 60.
(13)

Priya dharshini n said:   1 month ago
They are asking about the water, how can there estimated the total amount of litres of water?

Since it mentioned the water, then the answer is 40 litres.
(2)

Adnan ahmad said:   1 decade ago
Guys can anybody help me with this problem. The length and breadth of a rectangle is 57m and 38m respectively. Find the ratio of the length to breadth.

Vinita singh said:   7 years ago
This Question can also be solved as:

2x/x = 60,
X = 30.
New ratio is 1:2.
Where 1 part is milk.
Nd 2x is water put the value of x.
Hence water = 60.

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.

Shriram said:   1 decade ago
Mixture = 60 litre
ratio is 2: 1 , so milk:water=40:20
New ration= 1: 2
so , 40lr means 1
and x lr means 2
then make cross mul
x = 40*2/1
x = 80 lr


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