Mixtures and Allegations Set 4

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. An alloy of iron and nickil weight 50g. It contains 80% iron. How much iron should be added to the alloy so that percentage of iron is increased to 90?
(a) 50 g
(b) 60 g
(c) 30 g
(d) 40 g
(e) 60 g

Q2. Three vessels contain equal mixtures of acid and water in the ratio 6 : 1, 5 : 2 and 3 : 1 respectively. If all the solutions are mixed together, the ratio of acid to water in the final mixture will be
(a) 64 : 65
(b) 65 : 19
(c) 19 : 65
(d) 64 : 19
(e) 39 : 17

Q3. How many kg of sugar worth Rs. 25 per kg must be blended with 30 kg of sugar worth Rs. 30 per kg so that by selling the blended variety at Rs. 30 per kg there should be gain of 10%?
(a) 30 kg
(b) 32 kg
(c) 36 kg
(d) 42 kg
(e) 34 kg

Q4. A mixture contains milk and water in the ratio 5 : 1. On adding 5 liters of water, the ratio of milk and water becomes 5 : 2. The quantity of milk in the original mixture is?
(a) 16 litres
(b) 25 litres
(c) 22.75 liters
(d) 32.5 liters
(e) 28 litres

Q5. A vessel contains 1 litre mixture of kerosine and disel and the other vessel contains 2 litre mixture of the same. The ratio of kerosine and disel in first and second vessels is 5 : 4 and 7 : 2 respectively. The mixture of second vessel is poured back to first vessel. Find the ratio of kerosine and disel in the first vessel.
(a) 8 : 11
(b) 9 : 8
(c) 19 : 8
(d) 11 : 19
(e) 11 : 8