SSC CGLQuantitative Aptitude

Mixture and Alligation

6 SSC CGL Quantitative Aptitude previous year questions on Mixture and Alligation — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.

Q1 FREE PREVIEW
PYQ
In what ratio sugar at Rs 30/kg should be mixed with sugar at Rs 45/kg so that on selling the mixture at Rs 42/kg there is a profit of 20%?
a2:1
b2:3
c5:2
d3:7
✓ Correct answer: a) 2:1
ExplanationThe cost price of mixed the sugar = ₹35 per kg Using Alligation; ∴ Ratio of sugars to be taken = 12 ∶ 6 = 2 ∶ 1 Hence, Option A is the correct answer.
Q2
PYQ
How much water (in litres) must be added to 80 litres solution of milk and water containing 10% milk, so that it becomes a 5% milk solution?
a10
b20
c40
d80
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Q3
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Three bottles of equal capacity containing mixture of milk and water in ratio 2 : 5, 3 : 4 and 4: 5 respectively. These three bottles are emptied into a large bottle. What will be the ratio of milk and water respectively in the large bottle?
a73: 107
b73: 116
c73: 113
d73: 189
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Q4
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If two qualities of pulses 'X' and 'Y' priced at Rs 100 and Rs 150 per kg are mixed in the ratio 7:20, then what is the price (in Rs) of this mixture of pulses (correct to the nearest Rs) ?
a137
b135
c134
d136
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Q5
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One quality of rice at ₹45 per kg is mixed with another quality at a certain rate in the ratio of 3 :2. If the mixture so formed is worth ₹50 per kg, what is the rate per kg of the second quality of rice?
a₹57
b₹57.5
c₹58
d₹58.5
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Q6
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If 80 litres of milk solution has 60% milk in it, then how much milk should be added to make milk 80% in the solution?
a70 litres
b50 litres
c60 litres
d80 litres
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