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Mixture & Alligation || 02.03.2021

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Question 1

How many liters of oil at Rs.40 per liter should be mixed with 240 liters of a second variety of oil at Rs.60 per liter so as to get a mixture whose cost is Rs.52 per liter?

Question 2

A mixture is composed of 11 parts of pure milk and 2 parts of water. If 35 litres of water was added to the mixture then the new mixture will contain twice as much pure milk as water, then how many litres of pure milk does the original mixture contain?

Question 3

A man pays Rs. 6.40 per liter of milk. He adds water and sells the mixture at Rs. 8 per liter, thereby making 37.5% profit. The proportion of water to milk received by the customers is -

Question 4

A mixture of 40 litres of milk and water contains 10% water. How much water must be added to the mixture so that there is 20% water in the new mixture?

Question 5

The ratio in which two sugar solutions of the concentrations 25% and 40% are to be mixed to get a solution of concentration 30% is:

Question 6

Two types of tea costing 180/kg and 280/kg should be mixed in the ratio so that the mixture obtained sold at 320/kg. to earn a profit of 20% is?

Question 7

Solution A contains 10% acid and solution B contains 30% acid. In what ratio should solution A be mixed with Solution B to obtain a mixture with 25% acid?

Question 8

The water supplied to a water filtration company has 20% of chlorine. According to the regulations, the water can contain only 2% of chlorine after filtration. How many litres of water is required from the supply to produce 30 litres of filtered water?

Question 9

In what proportion must a grocer mix sugar at Rs.12/kg and Rs.7/kg so as to make a mixture worth Rs.8/kg?

Question 10

A vessel is filled with liquid containing a mixture of 5 part water and 7 part syrup. What percentage of the liquid must be drawn off and replaced with water so that mixture may be half water & half syrup.
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Mar 2SSC & Railway

Posted by:

Naresh RawalNaresh RawalMember since Jul 2020
Assistant Section Officer, Central Secretariat (AIR 203) - SSC CGL 2018 #Alumnus of IIT Dhanbad
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