Quiz 1B

Question 1

Time: 00:00:00
When they work alone, B needs 25% more time to ﬁnish a job than A does. They two ﬁnish the job in 13 days in the following manner: A works alone till half the job is done, then A and B work together for four days, and ﬁnally B works alone to complete the remaining 5% of the job. In how many days can B alone ﬁnish the entire job?

16

16

22

22

20

20

18

18

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Question 2

Time: 00:00:00
12 men and 16 boys can do a piece of work in 5 days and 13 men and 24 boys can do it in 4 days. Compare the daily work done by a man with that done by a boy.

2:1

2:1

1:2

1:2

2:3

2:3

3:2

3:2

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Question 3

Time: 00:00:00
In a test the average marks obtained by boys and girls in a class are 72 and 56 respectively. The average marks obtained by the class in the same test is 60. If in another test the average marks obtained by the boys and girls are 64 and 80 respectively, what is the average marks obtained by the class in the test?

76

76

72

72

78

78

84

84

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Question 4

Time: 00:00:00
A rice trader trades two qualities of rice: standard rice which costs him Rs 40/kg and premium rice which costs Rs 90/Kg .He mixes some quantity of the standard rice with the premium rice and sells it at Rs 100/kg thereby making a profit of 30%. What is the ratio in which the standard and premium rice have been mixed?

2:3

2:3

3:2

3:2

17:48

17:48

48:17

48:17

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Question 5

Time: 00:00:00
a, b, c are three distinct integers from 2 to 10 (both inclusive). Exactly one of ab, bc and ca is odd. abc is a multiple of 4. The arithmetic mean of a and b is an integer and so is the arithmetic mean of a, b and c. How many such triplets are possible (unordered triplets)?

8

8

6

6

4

4

2

2

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Question 6

Time: 00:00:00
All the rearrangements of the word "DEMAND" are written without including any word that has two D's appearing together. If these are arranged alphabetically, what would be the rank of "DEMAND"?

42

42

72

72

48

48

52

52

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Question 7

Time: 00:00:00
A and B take part in a duel. A can strike with an accuracy of 0.6. B can strike with an accuracy of 0.8. A has the first shot, post which they strike alternately. What is the probability that A wins the duel?

7/10

7/10

11/14

11/14

2/3

2/3

15/23

15/23

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Question 8

Time: 00:00:00
If all the rearrangements of the word AMAZON are considered, what is the probability that M will feature between the 2As?

1/3

1/3

2/3

2/3

5/4

5/4

4/5

4/5

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Question 9

Time: 00:00:00
The average weight of a class of 24 students is 36 years. When the weight of the teacher is also included, the average weight increases by 1kg. What is the weight of the teacher?

61

61

63

63

67

67

70

70

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Question 10

Time: 00:00:00
Shyam went from Delhi to Shimla via Chandigarh by car. The distance from Delhi to Chandigarh is 3 /4 times the distance from Chandigarh to Shimla. The average speed from Delhi to Chandigarh was again half as much as from Chandigarh to Shimla. If the average speed for the entire journey was 49 kmph, what was the average speed from Chandigarh to Shimla?

41

41

42

42

51

51

52

52

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["0","40","60","80","100"]
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