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Alligation or Mixture problems

Alligation or Mixture problems
In what ratio should tea costing Rs 300/kg be mixed with tea costing Rs 200/kg so that the cost of the mixture is Rs 225/kg?

4 : 1
1 : 4
3 : 1
1 : 3

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Alligation or Mixture problems
2/3 of a milk-water mixture was milk. There was 21 lit of the mixture. If 4 lit of water is added to it, the % of milk in the new mixture will be:

56
11
14
44

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the amount of juice and water in original mixture '4x' litre and '3x' litre respectively. According to given data, 4x/3x+6 =8/7 28x=24x+48 28x?24x=48 4x = 48 x = 12 Amount of juice = 4x = 4×12 = 48 litre.

Alligation or Mixture problems
A petrol pump owner mixed leaded and unleaded petrol in such a way that the mixture contains 10 % unleaded petrol. What quantity of leaded petrol should be added to 1 liter mixtures, so that the percentage of unleaded petrol becomes 5 %?

1800 ml
900 ml
1000 ml
1900 ml

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Alligation or Mixture problems
A man bought a certain quantity of sugar for Rs. 8000. He sells one-fourth of it at 20% loss. At what per cent profit should he sell the remainder stock so as to make an overall profit of 20%?

35%
30%
40%
20%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let the remainder stock be sold at P% profit.(P - 20) / 30 = ((1 / 4) / (3 / 4))or (P ? 20) = 30 × (1 / 3) or P = 20 + 10 P = 30% profit.

Alligation or Mixture problems
An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then the copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy?

250
750
1000
500

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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
26.34 litres
27.36 litres
28 litres

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Amount of milk left after 3 operations = [ 40 ❨ 1 - 4 ❩ 3 ] litres 40    = ❨ 40 x 9 x 9 x 9 ❩ = 29.16 litres.

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