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:
149 comments Page 3 of 15.

Dileep said:   5 years ago
40/20+x = 1/2.

Cross multiple;
80 = 20 + x.
x = 60.
(4)

Kishan said:   7 years ago
48 litre of glycerin is mixed with 144 litre of rose water. D litre of total mixture is taken out and 32 litre of glycerin and 48 litre of rose water added in the mixture. The final mixture contains 30% of glycerine. Find the quantity of mixture that is taken out? Please solve it.
(3)

Naveen kumar said:   6 years ago
2:1 = 40+20 = 60.
New Ratio 1:2 = 20+40 = 60.
Answer 60.
(3)

Shreyaa said:   5 years ago
40/20+x=1/2 anyone can solve it?
(2)

Chandu said:   7 years ago
First, the ratio is 2:1 is 40: 20,
New ratio is 1: 2 is 20:40.
We want the water so we can add water such that 20+40=60.
(1)

Vishal said:   7 years ago
In 2:1 ratio milk +water=40 + 20 = 60 then,
In 1:2 ratio milk+water=20 + 40 = 60 now only total of water from both ratio is 60.
(1)

Swathi hj said:   6 years ago
Thank you @Krishna you explained in the simple way.
(1)

Shubham said:   6 years ago
1+2 = 3.
60/3 = 20.

Water value is change,
But milk remains the same so,
2:1
(1:2)*2= 2:4.

Change in water 4-1 = 3.
Hence,
3*20 = 60.
(1)

Himanshu said:   5 years ago
Milk 2x:1x water.

Previously 2x+1x=60 litres.
3x=60L.
x=60/3=20litrs.

Previously values = milk - > 2*x=40L.
Water->1*x=20L.

Quantity to be further added in water=x.
40/20+x=1/2.
X=60 L.
(1)

Sukri said:   5 years ago
Initially we have 60lt in the ratio 2:1.
i.e: 40lt milk & 20lt water.

Think logically,

Our condition is to make the ratio as 1:2.
i.e: 40lt milk & 80lt water.
Then 40 : 80 it will become 1:2.
So, the required amount of water will be 80 - 20 (i.e: final quantity - initial quantity -> then we can get req amount of water to make the ratio as 1:2).
(1)


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