41. For any two numbers m, n; ( m - n ) : mn = 7 : 1 : 60 Find the value of 1/m : 1/n (Janata Bank. Assistant Executive Officer: 2019)

4 : 3

8 : 7

3 : 4

7 : 8

42. A tap can fill a tank in 6 hours. After half the tanks is filled three more similar taps are opened. Whats is the total time taken to fill the tank completely? (Janata Bank. Assistant Executive Officer: 2019)

4 hrs 15 min

3 hrs 45 min

3 hrs 24 min

4 hrs 51 min

43. The difference Between the length and breadth of a rectangle of a rectangle is 23 m. If its perimeter is 206 m. them its area is : (Janata Bank. Assistant Executive Officer: 2019)

2520 m2

1520 m2

2420 m2

2480 m2

44. The ratio between the perimeter and the breadth of a rectangle is 5:1 If the area of the rectangle is 216 sq. cm, what is the length of the rectangle? (Janata Bank. Assistant Executive Officer: 2019)

16 cm

24 cm

20 cm

18 cm

45. A rectangular block 6 cm by 12 cm is cut up into an exact number of equal cubes. Find the least possible number of cubes. (Janata Bank. Assistant Executive Officer: 2019)

30

40

50

60

46. In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize? (Janata Bank. Assistant Executive Officer: 2019)

5/7

1/5

2/7

1/2

47. Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is heart is: (Janata Bank. Assistant Executive Officer: 2019)

2/20

13/102

29/34

47/100

48. The difference between the compound interest and the simple interest on a certain sum at 5% per annum for 2 years in Tk. 1.50> The sum is --- (Janata Bank. Assistant Executive Officer: 2019)

Tk. 500

Tk. 400

Tk. 300

Tk. 600

49. How many liters of a 90% of concentrated acid needs to be mixed with a 75% solution of concentrated acid to get a 30 liter Solution of 78% concentred acid? (Janata Bank. Assistant Executive Officer: 2019)

8

6

7

9

50. If 1/5:1/N = 1/N : 1/1.25, then the value of N is---- (Janata Bank. Assistant Executive Officer: 2019)

1.25

1.5

2.25

2.5

51. A shopkeeper marks the price of an article at Tk. 80. What will be the selling price, if he allows two successive discounts of 5

Tk. 72

Tk. 85

Tk. 72.2

Tk. 7.2

52. A, B and C investment in a partnership in the ratio of 5 : 6 : 8 . The ratio of their profit is 5 : 3 : 12. Find the ratio of time for their investment? (Janata Bank. Assistant Executive Officer: 2019)

2:1:3

1:3:5

1:3:5

4:3:5

53. A man takes twice as long to row a distance against the stream as to row the same distance in favor of the stream. The ratio of the speed of the boat ( in still water ) and the stream is : (Janata Bank. Assistant Executive Officer: 2019)

2:1

3:2

4:3

3:1

54. A man can reach a certain place in 40 hours. If he reduces his speed by 1/15th, he goes 6 Km less in that time. Find the total distance covered by him. (Janata Bank. Assistant Executive Officer: 2019)

60 km

85 km

75 km

52 km

55. Nikki is 25% more efficient than Tina. Tina alone can build a craft in 20 days. Find the number of days taken by Nikki to finish the same piece of work? (Janata Bank. Assistant Executive Officer: 2019)

16

17

18

19

56. A lent Tk. 5000 to B for 2 years and Tk. 3000 to C for 4 years on simple interest at the same rate of interest and received Tk. 2200 in all from both of them as interest. The rate of interest per annum is :(Janata Bank. Assistant Executive Officer: 2019)

5%

7%

7 .1/2 %

10%

57. How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr? (Janata Bank. Assistant Executive Officer: 2019)

25

30

40

45

58. A and B can together complete' a piece of work in 4 days. 4 If A alone can complete the same work in 12 days, in how many days can B alone complete that work? (Janata Bank. Assistant Executive Officer: 2019)

4 days

5 days

6 days

7 days

59. Two buses start at the same time from Delhi and Agra which are 300 km apart, towards each other. After what time will they cross each other if their speeds are 38 km per hour and 37 km per hour? (Janata Bank. Assistant Executive Officer: 2019)

4 hours

3 hours

5 hours

6 hours

60. Choose the correct word spelling from the given options. (Janata Bank. Assistant Executive Officer: 2019)

Efllorescence

Efllorescence

Eforescence

Efflorescence