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:
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:
148 comments Page 7 of 15.
AbinashL said:
8 years ago
2x+x=60 => x=20,
So Milk=40L and Water=20L ,
Now to make 1:2 i.e. Milk=x and Water=2x.
We already have Milk=40L and we can take it as x=40 and Water as 2x=2*40=80L.
So, Water to be added is 80-20=60L (ans).
So Milk=40L and Water=20L ,
Now to make 1:2 i.e. Milk=x and Water=2x.
We already have Milk=40L and we can take it as x=40 and Water as 2x=2*40=80L.
So, Water to be added is 80-20=60L (ans).
Ajay kumqr said:
8 years ago
Simple formula is X(ad-bc)/c(a+b).
Applying this.
60(4-1)/1(2+1),
60*3/3= 60 ltr.
Applying this.
60(4-1)/1(2+1),
60*3/3= 60 ltr.
Ravi said:
8 years ago
We have 60 liters of the mixture with help of milk and water which means,
2x+1x=60.
3x=60x=20.
Now put the value of x in 2x and 1x. We get 40and20.
And question says that some quantity is further added to Water let take x. So.
40 (milk) /20 (water) +x=1/2.
40/20+x=1/2=>80=20+x.
X=60. Hence proved.
2x+1x=60.
3x=60x=20.
Now put the value of x in 2x and 1x. We get 40and20.
And question says that some quantity is further added to Water let take x. So.
40 (milk) /20 (water) +x=1/2.
40/20+x=1/2=>80=20+x.
X=60. Hence proved.
Palak said:
8 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.
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.
Priya said:
8 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?
But they didn't mention that the 2nd statement 1:2 Is related to the 1st statement, then how you are relating?
Koshik said:
8 years ago
@Santan,
Simple and easy explanation, Thanks.
Simple and easy explanation, Thanks.
Shelly said:
8 years ago
Water= 1+2 = 3 => 3 * 60
= 3*60/3= 60 liter.
= 3*60/3= 60 liter.
Koushikk said:
8 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.
Does that mean 2: 1 to be simply changed to 1:2 why did they link both? Please explain me.
Amit kumar said:
8 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.
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.
Shoaib said:
8 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.
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.
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