MODEL SOLVED PAPER RBI GRADE ‘B’ OFFICER’S EXAM Held on : 2008 (Part-II)

Total Questions: 50

41. Punit, Vinit and Ajit begin to jog around a stadium. They complete their revolutions in 45 seconds, 54 seconds and 36 seconds respectively. After how many seconds will they be together at the starting point ?

(1) 360
(2) 600
(3) 540
(4) 450
(5) None of these

Correct Answer: (3) 540

Solution:Time taken by Punit, Vinit and Ajit to be together at the starting point
= LCM of 45, 54 and 36 seconds = 3 x 3 x 2 x 5 x 3
x 2 = 540 seconds

42. Raksha invested an amount of Rs. 60,000 to start a software business. After six months, Kamal joined her with an amount of Rs. 90,000. After one year from the commencement of the business, Raksha put in an additional amount of Rs. 20,000. At the end of three years, they earned a profit of Rs. 71,20,000. What is Raksha's share in the profit ?

(1) Rs. 35,20,000
(2) Rs. 26,40,000
(3) Rs. 27,00,000
(4) Rs. 38,40,000
(5) None of these

Correct Answer: (1) Rs. 35,20,000

Solution:Equivalent capital of Raksha for 1 year

43. 9 Men working for 7 hours a day can complete a piece of work in 15 days. In how many days can 6 men working for 9 hours a day, complete the same piece of work ?

(1) 17³⁄₄ days
(2) 16³⁄₄ days
(3) 16 days
15³⁄₄ days
(5) None of these

Correct Answer: (1) 17³⁄₄ days

Solution:

Where $x$ = number of days

44. Ratio of earnings of A and B is 8 : 9 respectively. If the earnings of A increase by 50% and the earnings of B decrease by 25%, the new ratio of their earnings becomes 16:9 respectively. What are A's earnings?

(1) Rs. 37,000
(2) Rs. 28,500
(3) Rs. 22,000
(4) Cannot be determined
(5) None of these

Correct Answer: (4) Cannot be determined

Solution:Let the earnings of A and B be Rs. 8

x

and Rs. 9

x

respectively.

Now, after changes in their earnings,

A's earning

= 8x × 150/100 = Rs. 12 $x$

B's earning

= 9 $x \times 100 75$ = Rs. $4 27 x$

Clearly, we need sum of their earnings etc. to get the desired result.

45. Nitin rides a bicycle at the speed of 15 kms/hr., but stops for 10 minutes to take rest every 20 kms. How much time will he take to cover a distance of 150 kms. ?

(1) 12 hours 30 minutes
(2) 11 hours 10 minutes
(3) 10 hours 20 minutes
(4) 12 hours 10 minutes
(5) None of these

Correct Answer: (2) 11 hours 10 minutes

Solution:Nitin will take rest seven times i.e. 70 minutes in covering 150 km.

Time taken to cover 150 km at 15 kmph

= $150/15$ = 10 hours

$∴$ Total time

= 10 hours + 70 minutes

= 11 hours 10 minutes

46. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

Give answer

(1) if $x < y$

(2) if $x > y$

(3) if $x \leq y$

(4) if $x \geq y$

(5) if $x = y$

Correct Answer: (3)

47. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

Give answer

(1) if $x < y$

(2) if $x > y$

(3) if $x \leq y$

(4) if $x \geq y$

(5) if $x = y$

Correct Answer: (5)

48. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

Give answer

(1) if $x < y$

(2) if $x > y$

(3) if $x \leq y$

(4) if $x \geq y$

(5) if $x = y$

Correct Answer: (1)

49. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

Give answer

(1) if $x < y$

(2) if $x > y$

(3) if $x \leq y$

(4) if $x \geq y$

(5) if $x = y$

Correct Answer: (4)

50. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

Give answer

(1) if $x < y$

(2) if $x > y$

(3) if $x \leq y$

(4) if $x \geq y$

(5) if $x = y$

Correct Answer: (2)

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MODEL SOLVED PAPER RBI GRADE ‘B’ OFFICER’S EXAM Held on : 2008 (Part-II)

41. Punit, Vinit and Ajit begin to jog around a stadium. They complete their revolutions in 45 seconds, 54 seconds and 36 seconds respectively. After how many seconds will they be together at the starting point ?

43. 9 Men working for 7 hours a day can complete a piece of work in 15 days. In how many days can 6 men working for 9 hours a day, complete the same piece of work ?

44. Ratio of earnings of A and B is 8 : 9 respectively. If the earnings of A increase by 50% and the earnings of B decrease by 25%, the new ratio of their earnings becomes 16:9 respectively. What are A's earnings?

45. Nitin rides a bicycle at the speed of 15 kms/hr., but stops for 10 minutes to take rest every 20 kms. How much time will he take to cover a distance of 150 kms. ?

46. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

47. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

48. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

49. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

50. In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :

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