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  • Question
  • There are two parallel streets each directed north to south. A person in the first street travelling from south to north wishes to take the second street which is on his right side. At some place, he makes a 150 deg turn to the right and he travels for 15 minutes at the speed of 20 km/hr. After that he takes a left turn of 60 deg and travels for 20 minutes at the speed of 30 km/hr in order to meet the second street. What is the distance between the two streets?


  • Options
  • A. 7.5 km
  • B. 10.5 km
  • C. 12.5 km
  • D. 15 km

  • Correct Answer
  • 12.5 km 

    Explanation
    Initially the person is travelling from south to north i.e. D to A
    He takes 150 deg right turn and moves AB distance and then he takes 60 deg left turn travels BC
    AB = 20km/hr * 15/60 hr = 5km
    BC = 30 * 20/60 = 10 km
    We know that distance between both the streets is DC = DB + BC
    DB = AB cos 60o= 5. ½ =2.5 km
    So the distance between streets = 12.5 km
  • Tags: Bank Exams

    Height and Distance problems


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    • 1. Two men standing on same side of a pillar 75 metre high, observe the angles of elevation of the top of the pillar to be 30° and 60° respectively the distance between two men is

    • Options
    • A. 100 3m
    • B. 100m
    • C. 753m
    • D. 253m
    • Discuss
    • 2. The height and the slant height of a right circular cone are 24 cm and 25 cm, respectively. Considering ? as 22/7 , find the curved surface area of the said cone.

    • Options
    • A. 550 cm2
    • B. 572 cm2
    • C. 528 cm2
    • D. 539 cm2
    • Discuss
    • 3. A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?

    • Options
    • A. 6.2 m
    • B. 6.5 m
    • C. 6.8 m
    • D. 7.5 m
    • Discuss
    • 4. A flagstaff 17.5 m high casts a shadow of length 40.25 m. What will be the height of a building, which casts a shadow of length 28.75 m under similar conditions ? ?

    • Options
    • A. 14 cm
    • B. 13.5 cm
    • C. 12.5 cm
    • D. 11.4 cm
    • Discuss
    • 5. The top and bottom of a tower were seen to be at angles of depression 30° and 60° from the top of a hill of height 100 m. Find the height of the tower ?

    • Options
    • A. 42.2 mts
    • B. 33.45 mts
    • C. 66.6 mts
    • D. 58.78 mts
    • Discuss
    • 6. The top of a broken tree touches the ground at a distance of 15 m from its base. If the tree is broken at a height of 8 m from the ground, then the actual height of the tree is

    • Options
    • A. 17 m
    • B. 27 m
    • C. 25 m
    • D. 30 m
    • Discuss
    • 7. A ladder 13 m long reaches a window which is 12 m above the ground on side of a street. Keeping its foot at the same point, the ladder is turned to the other side of the street to each a window 5m high, then the width of the street is :

    • Options
    • A. 17 m
    • B. 16 m
    • C. 14 m
    • D. 15 m
    • Discuss
    • 8. From a point P on a level ground , the angle of elevation to the top of the tower is 30° . If the tower is 100m high , the distance of point P from the foot of the tower is ( Take ?3 = 1.73)

    • Options
    • A. 149 m
    • B. 156 m
    • C. 173 m
    • D. 188 m
    • Discuss
    • 9. A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite sideof Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower?

    • Options
    • A. 90
    • B. 45?3
    • C. 45(?3+1)
    • D. 45(?3+2)
    • Discuss
    • 10. On a ground , there is a vertical tower with a flagpole on its top . At a point 9 m away from the foot of the tower , the angles of elevation of the top and bottom of the flagpole are 60° and 30° respectively . The height of the flagpole is

    • Options
    • A. 5?3 m
    • B. 6?3 m
    • C. 6?2m
    • D. 6?5 m
    • Discuss


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