Mixtures and Allegations Set2

Mixtures and Allegations are asked in all competitive exams including SSC, IBPS PO, IBPS Clerk, SBI. We will be coming up with many more sets on the same to boost your preparation for competitive exams

Q1. Two barrels contain a mixture of ethanol and gasoline. The content of the ethanol is 60% in the first barrel and 30% in the second barrel. In what ratio must be mixtures from the first and the second barrels be taken, to from a mixture containing 50% ethanol?
(a) 1 : 2
(b) 2 : 1
(c) 2 : 3
(d) 3 : 2
(e) None of these

Q2. In a mixture of milk and water, the proportion of water by weight was 75%. If in the 60 gm mixture, 15 gm water was added, what would be the percentage of what in the new mixture?
(a) 75%
(b) 88%
(c) 90%
(d) 100%
(e) None of these

Q3. The wheat sold by a grocer contained 10% low quality wheat. What quantity of good quality wheat should be added to 150 kg of wheat, so that the percentage of low quality wheat becomes 5%?
(a) 150 kg
(b) 135 kg
(c) 50 kg
(d) 85 kg
(e) None of these

Q4. In 1 kg mixture of sand and iron, 20% is iron. How much sand should be added, so that the proportion of iron becomes 5%?
(a) 3 kg
(b) 4 Kg
(c) 5 Kg
(d) 6 kg
(e) None of these

Q5. A man purchased 35 kg of rice at the rate of Rs. 9.50 per kg and 30 kg at the rate of Rs. 10.50 per kg. He mixed the two. Approximately, at what price (in Rupees) per kg should he sell the mixture to make 35% profit in the transaction?
(a) 12
(b) 12.50
(c) 13
(d) 13.50
(e) 11

Answers:

1. B 2. B 3. A 4. A 5. D