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:
148 comments Page 6 of 15.

Sathish said:   7 years ago
very simple way.

The ratio of milk and water :: 2:1
Total mixture of milk and water =60 lits
milk =2x
water=1x

=> lit of milk+lit of water=total lits.
=>2x+1x=60,
=>3x=60,
=>x=20.

Surendra Kurapati said:   10 years ago
2:1 ratio.

M:W

For milk: 2/3*60 = 40 lts milk.

For water: 60-40 = 20 lts water.

1:2 ratio.

M:W.

For water: 2/3*60 = 40 ltrs water.

What he is asked total water mixture i.e 20+40 = 60?

Emani karthik Reddy said:   1 decade ago
Total milk&water mixture is 60lit
milk&water ratio=2:1
separate milk =(2/3)*60 =40lit
water =(1/3)*60=20lit
new ratio is 1:2
only water added let x
=>(40/(20+x))=1:2
=>x=60lit

Deenadayalan DansaG said:   5 years ago
Milk:Water = 40:20 = 2:1.

But we don't change milk we want to add water to change the ratio so 1:2 = 40:80 already 20liter is there so if we add 60ltr the ratio will come that's all.

Aiswarya said:   7 months ago
Orginal mixture = 60l.
Milk: water = 2:1.
Milk = 60 * 2/3 = 40l.
Water = 60 * 1/3 = 20l.

New mixture ratio = 1:2.
40lmilk + (20+x)l water,
40:20 + x = 1:2,
20 + x = 80,
X = 60.
(8)

Shyam said:   7 years ago
For water calculation of 1st ratio.
Water: 60 * 1/3=20 lit
For second ratio the water ratio will be 2/3
So water to be added: [20+(2/3) * 60]=60 lit.
That's the answer is 'D.

Tanoy Saha said:   2 years ago
The first ratio is 1 : 3.
Quantity of water, 60 * 1/3 = 20,
Another ratio is 2 : 3.
Quantity of water, 60 * 2/3 = 40.
Quantity of water to be added = (20 + 40) = 60 litres.
(35)

Santan said:   1 decade ago
2:1 ratio of 60 litre is 40 litre milk and 20 litre water.

i.e 40:20
so to get the ratio 1:2 we should have 40:80
hence we have to add 80-20 (i.e 60) litre of water.

Chith said:   4 years ago
The initial quantity of milk=(2/3)*90 = 60,
Initial quantity of water=(1/3)*90 = 30,
If the ratio is to be 2:3 the water to be added;
(60÷(30+x)) = 2/3,
X = 60.
(6)

Souvik das said:   3 years ago
The ratio of milk and water in 60L is;
m=2.
w=1 (2+1)=3,
milk = 2/3, water=1/3.

milk in 60L = 2/3 * 60= 40L.
water in 60L = 1/3 * 60= 20L,
40:(20+60)=4:8= 1:2.
(9)


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