Q.41. A train moves with a speed of 108 km/hr. Its speed in metres per second is :
(a) 10.8
(b) 18
(c) 30
(d) 33.8
Q.42. A speed of 14 meters per second is the same as :
(a) 28 km/hr
(b) 46.6 km/hr
(c) 50.4 km/hr
(d) 70 km/hr
Q.43. 526 X 12 + 188 = 50 X ?
(A) 120
(B) 160
(C) 140
(D) 110
(E) None of these
Q.44. 62 power 2 - 32 power 2 + 7 power 2 = 3144
(A) 17
(B) 16
(C) 19
(D) 15
(E) None of these
Q.45. 3 root 21952 + 33 = ?
(A)58
(B) 61
(C) 63
(D) 51
(E) None of these
Q.46. What is the present worth of Rs. 264 dues in 4 years at 10% simple interest per annum?
(a) 170.20
(b) 166
(c) 188.57
(d) 175.28
Q.47. A sum fetched a total simple interest of Rs. 8016.25 at the rate of 6 p.c.p.a in 5 years what is the sum?
(a) 24720.83
(b) 26730.33
(c) 26720.83
(d) 26710.63
(e) None of these
Q.48. Rs. 800 becomes Rs. 956 in 3 years at a certain rate of simple interest. If the rate of interest is increased by 4%, what amount will Rs 800 become in 3 years?
(a) 1020.80
(b) 1025
(c) 1052
(d) Data inadequate
(e) None of these
Q.49. A man is watching from the top of a tower a boat speeding away from the tower. The boat makes an angle of depression of 450 with the man’s eye when at a distance of 60 metres from the tower. After 5 seconds, the angle of depression becomes 300. What is the approximate speed of the boat, assuming that it is running in still water?
(a) 32 kmph
(b) 36 kmph
(c) 38 kmph
(d) 40 kmph
(e) 42 kmph
Q.50. The top of a 15-meter-high tower makes an angle of elevation of 600 with the bottom of an electric pole and angle of elevation of 30 with the top of the pole. What is the height of the electric pole?
(a) 5 meters
(b) 8 meters
(c) 10 meters
(d) 12 meters
(e) None of these
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