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 16 of 16.
Saurabh nikam said:
6 years ago
How take 2/3? Please explain.
Teja said:
6 years ago
M:W (initial mixture)
2:1
1:2(required).
Given total volume = 60ltrs.
As milk is not added we the ratio of milk need to be same in both the cases.
2*(1:2)=2:4(required).
2:1(initial).
4-1=3(difference in water in both cases).
2+1=total volume (60).
3-----> 60.
From this, we can say another 3 parts were added to get the required ratio.
2:1
1:2(required).
Given total volume = 60ltrs.
As milk is not added we the ratio of milk need to be same in both the cases.
2*(1:2)=2:4(required).
2:1(initial).
4-1=3(difference in water in both cases).
2+1=total volume (60).
3-----> 60.
From this, we can say another 3 parts were added to get the required ratio.
Kaveri said:
6 years ago
Thank you, Very clear method, @Santan.
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