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 9 of 15.
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:
4 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:
9 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:
8 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:
8 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.
Ravi said:
7 years ago
2:1 = 2 * 60 : 1 * 60,
= 120 : 60.
For 1:2 reverse it, so answer for new proportion is 60.
= 120 : 60.
For 1:2 reverse it, so answer for new proportion is 60.
Sai said:
1 decade ago
@Sai
5x/(1x+5)=5/2
10x=5x+25
5x=25
I think 25 litres is the correct ans what do u say guys ?
5x/(1x+5)=5/2
10x=5x+25
5x=25
I think 25 litres is the correct ans what do u say guys ?
Mohitsharma said:
10 years ago
Old: 2:1 mix = 60.
New: (1:2)*2 = 2:4.
Water added = (1*60)/4-1 = 20.
New mix = 20+40 = 60.
New: (1:2)*2 = 2:4.
Water added = (1*60)/4-1 = 20.
New mix = 20+40 = 60.
Ashok said:
9 years ago
Very simple in inverted method says.
a : b = b : a.
i.e a/b = b/a so, answer is 60 the same.
a : b = b : a.
i.e a/b = b/a so, answer is 60 the same.
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