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:
153 comments Page 9 of 16.
Shrikant said:
1 decade ago
Here is one shortcut for such type of problems.
Given quantity x lit.
Ratio p : q.
Ratio a : b.
Formula is x(pb-qa)/a(p+q).
Given quantity x lit.
Ratio p : q.
Ratio a : b.
Formula is x(pb-qa)/a(p+q).
Sandhya said:
9 years ago
It is so simple.
First value of water = 1.
Second value of water = 3.
Therefore:
1/3 * 60 = 20
2/3 * 60 = 40
20 + 40 = 60.
First value of water = 1.
Second value of water = 3.
Therefore:
1/3 * 60 = 20
2/3 * 60 = 40
20 + 40 = 60.
Chandu said:
8 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.
New ratio is 1: 2 is 20:40.
We want the water so we can add water such that 20+40=60.
(1)
Raja said:
8 years ago
First ratio:-2:1.
Milk qunts 1/2*60=30,
Water qunts 60-30=30,
New ratio:-1:2
ratio quantity doubled,
2*30=60lts.
Milk qunts 1/2*60=30,
Water qunts 60-30=30,
New ratio:-1:2
ratio quantity doubled,
2*30=60lts.
MYTHILY said:
1 decade ago
We can solve this simply
part of water is 1/3 in 60ltr
so 60*1/3=30
1 part is 30 then 2 part of same 60ltr is 60 ltr.
part of water is 1/3 in 60ltr
so 60*1/3=30
1 part is 30 then 2 part of same 60ltr is 60 ltr.
Swetha said:
5 years ago
m:w=2:1
m+w=60
2x+x-=60
x=20.
m=40 w=20.
Added water be y.
40:(20+y) = 1:2.
On cross multiplication
y=60.
m+w=60
2x+x-=60
x=20.
m=40 w=20.
Added water be y.
40:(20+y) = 1:2.
On cross multiplication
y=60.
(13)
AJAY MISHRA said:
10 years ago
Milk = 2/3 * 60 = 40;
Water =1/3 * 60 = 20;
Aadd water = x (suppose)
then, 40/(20 + x) = 1:2.
x = 60 -> answer.
Water =1/3 * 60 = 20;
Aadd water = x (suppose)
then, 40/(20 + x) = 1:2.
x = 60 -> answer.
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).
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.
2x+1x = 60,
3x = 60,
X = 20, then 2x = 40,
40 + 20 = 60.
Sushil said:
9 years ago
The Formula given by Shrikant and Biseswar is quite simple and useful. Thanks, @Biseswar & @Shrikant.
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