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Updated on September 1, 2023

DATA MINING TUTORIAL

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1). Rs. 30 per kg
2). Rs. 42 per kg
3). Rs. 36 per kg
4). Rs. 28 per kg

In 1 kg mixture of sand and iron, 23% is iron. How much sand should be added so that the proportion of iron becomes 13%
1). 769.2 gms
2). 800 gms
3). 760.92 gms
4). Data insufficient

In an alloy, lead and tin are in the ratio of 2 : 3. In the second alloy, the ratio of same elements is 3 : 4. If equal quantities of these two alloy are mixed to form a new alloy, then what will be the ratio of these two elements in the new alloy?
1). 1 : 3
2). 29 : 41
3). 25 : 37
4). 31 : 43

In what ratio wheat costing Rs. 17/ kg should be mixed with another wheat costing Rs. 12/kg to get a mixture costing Rs. 13.5/ kg?
1). 1 : 2
2). 2 : 5
3). 3 : 7
4). 4 : 9


1). 94%
2). 93%
3). 95%
4). 92%

The ratio of the volumes in water an glycerin in 320 cc of a mixture is 1 : 3. The quantity of water (in cc) that should be added to the mixture so that the new ratio of the volumes of water and glycerin becomes 2 : 3 is
1). 55
2). 80
3). 62.5
4). 64

6 kg sugar costing Rs. 10/kg is mixed with 4 kg sugar costing Rs. 15/kg. What is the average cost of the mixture per kilogram?
1). Rs. 12
2). Rs. 15
3). Rs. 10
4). Rs. 13

A and B are two alloys of tin and lead prepared by mixing metals in the ratios 3 : 5 and 6 : 11 respectively. Equal quantities of these alloys are melted to form a third alloy C. The ratio of tin and lead in the alloy C is
1). 95 : 174
2). 42 : 91
3). 99 : 173
4). 24 : 20


1). 5 : 7
2). 7 : 5
3). 7 : 6
4). 6 : 7


1). 7 : 5
2). 6 : 5
3). 7 : 4
4). 1 : 1

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