RBI OFFICER GRADE ‘B’ ONLINE EXAM Held on : 25.08.2013 (Part-III)

Total Questions: 50

11. Train A crosses a pole and platform in 18 secnds and 39 seconds respectively. The length of platform is 157.5 metre. What will be the length of train B if it is equal to the sum of half of the length of train A and twice the length of the platform?

Correct Answer: (1) 382.5 metre
Solution:Length of train A = x metre

∴ Length of train B

12. If 12 boys or 15 girls can do a work in 48 days, in what time will 24 boys and 6 girls do twice the work?

Correct Answer: (2) 40 days
Solution:∴ 12 boys = 15 girls
∴ 24 boys = 30 girls
∴ 24 boys + 6 girls
= 36 girls

∴ M₁D₁​/W₁​=M₂​D₂/W₂

⇒ 15 × 48/1 = 36 × D₂​/2

⇒ D₂ days

13. What will come in place of the question mark (?) in the following number series?

224   576   752   840   884 ?

Correct Answer: (3) 906
Solution:The pattern is :
  1. 576 - 224 = 352
  2. 752 - 576 = 176
  3. 840 - 752 = 88
  4. 884 - 840 = 44

∴ ? = 884 + 22 = 906

14. What will come in place of the question mark (?) in the following number series?

55   66.15   88.45   121.9   166.5 ?

Correct Answer: (4) 222.25
Solution:The pattern is : 55 + 11.15 = 66.15

66.15 + 2 x 11.15 = 88.45

88.45 + 3 x 11.15 = 121.9

121.9 + 4 x 11.15 = 166.5

166.5 + 5 x 11.15

= 166.5 + 55.75 = 222.25

15. What will come in place of the question mark (?) in the following number series?

36   49   75   88   114 (?)

Correct Answer: (5) 127
Solution:The pattern is
36 + 13 = 49
49 + 2 x 13 = 75
75 + 13 = 88

88 + 2 x 13 = 114

114 + 13 = 127

16. In the following graph the number of laptops manufactured by six different companies in the years 2010 and 2011 has been given. Read the graph carefully and answer the questions.

Number of laptops (in thousands) manufactured by 6 different companies

The respective ratio between the number of laptops manufactured by Lenovo in 2010 and that by Abascus in 2011 is

Correct Answer: (1) 8 : 7
Solution:Required ratio = 40 : 35
= 8 : 7

17. In the following graph the number of laptops manufactured by six different companies in the years 2010 and 2011 has been given. Read the graph carefully and answer the questions.

Number of laptops (in thousands) manufactured by 6 different companies

What is the average number of laptops (in thousands) manufactured by all companies taken together in 2010?

Correct Answer: (2) 22.5
Solution:Required average

18. In the following graph the number of laptops manufactured by six different companies in the years 2010 and 2011 has been given. Read the graph carefully and answer the questions.

Number of laptops (in thousands) manufactured by 6 different companies

What is the percentage increase in production of laptops by HP in 2011 in comparison to that in 2010?

Correct Answer: (3) 150
Solution:Required percentage increase

19. In the following graph the number of laptops manufactured by six different companies in the years 2010 and 2011 has been given. Read the graph carefully and answer the questions.

Number of laptops (in thousands) manufactured by 6 different companies

The difference between the number of laptops manufactured by Apple, Lenovo and Samsung in 2010 and that by Dell, HP and Abascus in 2011 is

 

Correct Answer: (5) 5000
Solution:Laptops manufactured by Apple, Lenovo and Samsung in 2010
= 15 + 40 + 25 = 80 thousand
Laptops manufactured by Dell, HP and Abascus in 2011
= 15 + 25 + 35
= 75 thousand
Difference = 5000

20. In the following graph the number of laptops manufactured by six different companies in the years 2010 and 2011 has been given. Read the graph carefully and answer the questions.

Number of laptops (in thousands) manufactured by 6 different companies

In 2011, which company manufactured the maximum number of laptops?

Correct Answer: (1) Abascus
Solution:Abascus ⇒ 35000