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Alligation or Mixture problems

Alligation or Mixture problems
A milkman buys milk at Rs 25 per litre and adds 1/4 of water to it and sells the mixture at Rs 26 per litre. His gain (in %) is?

30
20
25
15

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let initial quantity be Q, and final quantity be F F = Q(1 - 8/Q) 4 => Q = 20

Alligation or Mixture problems
If a dairy mixes cow's milk which contains 10% fat with buffalo's milk which contains 20% fat, then the resulting mixture has fat (120/7)% of fat. What ratio was the cow's milk mixed with buffalo's milk?

2 : 1
2 : 3
2 : 5
1 : 5

ANSWER DOWNLOAD EXAMIANS APP

Alligation or Mixture problems
Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.

4:5
3:4
1:3
2:3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

By the rule of alligation:Cost of 1 kg rice of 1st kind                  Cost of 1 kg rice of 2nd kind        Required ratio = 60 : 90 = 2 : 3

Alligation or Mixture problems
A container contains 40 litres of milk.From this container 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained by the container.

29.16 litres
28 litres
27.36 litres
26.34 litres

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Amount of milk left after 3 operations   40 1 - 4 40 3 = 40 * 9 10 * 9 10 * 9 10 = 29 . 16  litres

Alligation or Mixture problems
Rs. 1000 is lent out in two parts, one at 6 % simple interest and the other at 8 % simple interest. The yearly income is Rs. 75. The sum lent at 8 % is ?

Rs. 250
Rs. 750
Rs. 600
Rs. 500

ANSWER DOWNLOAD EXAMIANS APP

Alligation or Mixture problems
In a mixture of 35 litres, the ratio of milk and water is 4:1. If 7 litres of water is added to the mixture, the ratio of milk and water of the new mixture will be

2:1
4:5
1:2
5:4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Ratio of milk andwater = 4:1 Quantity of water = 35/5 = 7 litres Quantity of milk = 35 X 4/5 = 28 litres If 7 litre of water is added, new quantity of water = 14 litre New ratio of milk and water = 28:14 = 2:1

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