Question 2 of 30
Two persons A and B are jogging on the side of a 1640
meter long road. They start moving towards each other
from the opposite ends of the road. A covers 430 meters
straight turns towards his right and again runs 150
meters. He then turns towards his left and stops after
covering 350 meters. B covers 670 meters straight and
turns towards his left. He then runs 150 meters and stops.
What is the distance between A and B at this point?
Answers
Answer:
A 30.
B 1256.
Step-by-step explanation:
two persons A and B starts from the opposite ends of a 90 km straight track and run to and fro between two ends. Speed of A is 30 m/s and B is 1256 m/s. They continue their motion for 10 hours. How many times do they pass each other?
I have done in the following way : The speeds of two persons are 108 km/h and 75 km/h. The first person covers 1080 km in 10 hours and thus he made 12 rounds. Thus the person will cross another person 12 times in any one of the direction.
Is this answer accurate? or is there any possibility of their not meeting each other in these 12 rounds for being faster?
Answer:
Distance between A and B is 190m.
Step-by-step explanation:
Initial distance between A and B is 1640m.
They start moving towards each other from opposite ends.
A covers 430m straight turns right and run 150m then turns left and covers 350m.
⇒ Distance covered by A in straight line = 430 + 350 = 780m.
B covers 670m straight then turns left and runs 150m.
⇒ Distance covered by B in straight line = 670m.
Total distance covered by A and B together in straight line = 780 + 670
= 1450m.
Now, distance between A and B at this point is = 1640 - 1450
= 190m.