Question 11 : A is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, the how old is B?
1. 9
2. 10
3. 11
4. 12
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Question 12 : Pipe A can fill a tank in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank?
1. 15 1/7 minutes
2. 12 1/7 minutes
3. 17 1/7 minutes
4. 10 1/7 minutes
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Question 13 : What is the sum of two consecutive even numbers, the difference of whose squares is 84?
1. 32
2. 34
3. 38
4. 42
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Question 14 : A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is
1. 71.11 km/hr
2. 36 Km/hr
3. 71 Km/hr
4. 36.33 Km/hr
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Question 15 : When you reverse the digits of age of father, you will get the age of son. one year ago the age of father was twice that of son's age. what are the current ages of father and son?
1. 73 and 37
2. 45 and 54
3. 31 and 13
4. 24 and 42
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Question 16 : Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time will they cross each other travelling in opposite direction?
1. 9 s
2. 10 s
3. 11 s
4. 12 s
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Question 17 : A can contains a mixture of two liquids A and B in the ratio 7:5.When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the can initially?
1. 21
2. 19
3. 18
4. 17
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Question 18 : A can type 10 pages in 5 minutes. B can type 5 pages in 10 minutes. Working together, how many pages can they type in 30 minutes?
1. 15
2. 25
3. 65
4. 75
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Question 19 : In a class of 100 students, 50 students passed in Mathematics and 70 passed in English, 5 students failed in both Mathematics and English. How many students passed in both the subjects?
1. 50
2. 40
3. 35
4. 25
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Question 20 : Speed of a boat in still water is 9 km/hr. It goes 12 km down stream and comes back to the starting point in three hours.What is the speed of water in the stream?
1. 3.5 km/hr
2. 3 km/hr
3. 5 km/hr
4. 5.5 km/hr
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