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Quantitative Aptitude

MIXTURES AND ALLEGATIONS MCQs

Alligations And Mixtures

Total Questions : 245 | Page 25 of 25 pages
Question 241. In what ratio should the rice costing 18 Rs/kg be mixed with the rice costing 14 Rs/kg to find a profit of 25% by selling the mixture at 20 Rs/kg?
  1.    2 : 1
  2.    1 : 1
  3.    1 : 3
  4.    3 : 4
 Discuss Question
Answer: Option B. -> 1 : 1
Question 242. A container contains 54 litres of acid
  1.    32.5
  2.    34.5
  3.    35
  4.    37.5
  5.    39
 Discuss Question
Answer: Option D. -> 37.5
Question 243. How many kg of pure salt must be added to 25 kg of a 5% solution of salt and water to increase it to a 12% solution: to
  1.    \(7\frac{2}{3}kg\)
  2.    1.99 kg
  3.    1.5 kg
  4.    \(11\frac{1}{3}\) kg
 Discuss Question
Answer: Option B. -> 1.99 kg
Question 244. In a mixture of 70 kg of rice and wheat, 40% of mixture is wheat, what quantity of wheat must be added to the mixture so that concentration of rice becomes 30% in the mixture?
  1.    45 kg
  2.    60 kg
  3.    80 kg
  4.    70 kg
 Discuss Question
Answer: Option D. -> 70 kg
Question 245. What quantity of water should be added to 5 L of 20% solution of salt, so that it becomes a 10% salt solution?
  1.    3.5 L
  2.    5.7 L
  3.    5 L
  4.    Cannot be determined
 Discuss Question
Answer: Option C. -> 5 L

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