Quantitative Aptitude Qs

Practice Area – Ramu mixed 40% kerosene solution to 25% kerosene solution hence obtaining 30% kerosene solution. In what ratio were the both solutions mixed?

Practice Alligation or Mixture – Bottle 1 contains a mixture of milk and water in 7: 2 ratio and Bottle 2 contains a mixture of milk and water in 9: 4 ratio. In what ratio of volumes should the liquids in Bottle 1 and Bottle 2 be combined to obtain a mixture of milk and water in 3:1 ratio?

Practice Alligation or Mixture – Consider three mixtures – the first having water and liquid A in the ratio 1:2, the second having water and liquid B in the ratio 1:3, and the third having water and liquid C in the ratio 1:4. These three mixtures of A, B, and C, respectively, are further mixed in the proportion 4: 3: 2. Then the resulting mixture has

Practice Alligation or Mixture – The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100%, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?

Practice Alligation or Mixture – If the sum of the first thirteen terms of an AP and the sum of the next twelve terms of the progression are in the ratio 26 : 49, then what is the ratio of the thirteenth term to the seventh term of the progression?

Practice Alligation or Mixture – Ajay purchased four varieties of rice at the rate of 2 kgs/Re., 3 kgs/Re., 4kgs/Re.and 5 kgs/Re. If he mixes all the four varities of rice in the ratio 4 : 3 : 2 : 1 in the given order, then the price at which Ajay should sell the mixture to make a profit of 20% is

Practice Alligation or Mixture – A can contains a mixture of two liquids A and B in the ratio 7:5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the can initially ?

Practice Alligation or Mixture – How many litres of a 90% solution of concentrated acid needs to be mixed with a 75% solution of concentrated acid to get a 30 L solution of 78% concentrated acid?

Practice Alligation or Mixture – Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio 1:1:2. If the mixture is worth Rs. 153 per kg, the price of the third variety per kg will be:

Practice Alligation or Mixture – Prabodh bought 30 kg of rice at the rate of Rs. 8.50 per kg and 20 kg of rice at the rate of Rs. 9.00 per kg. He mixed the two. At what price (App.) per kg should he sell the mixture in order to get 20% profit?

Practice Alligation or Mixture – Three different containers contain 496 litres, 403 litres and 713 litres of mixtures of milk and water respectively. What biggest measure can measure all the different quantities exactly ?

Practice Alligation or Mixture – Shobhit bought 300 litres of milk at Rs. 19 per litre. He added 200 litres of water to it and sold 400 litres of this milk at Rs. 20 per litre. To the rest, he added 10 litres more water and then sold it for Rs. 15 per litre. If he used mineral water that costs Rs. 10 per litre, then the total money earned by Shobhit is :