Question : Directions: A and B are standing at the same point. They start moving in opposite directions at speeds of 5 kmph and 4 kmph respectively. What will be the distance between them after 3 hours?
Option 1: 3 km
Option 2: 21 km
Option 3: 18 km
Option 4: 27 km
Correct Answer: 27 km
Solution :
Given:
Speed of A = 5 kmph; Speed of B = 4 kmph
Time = 3 hours
According to the instructions given, both A and B are standing at the same point, and from there they start moving in opposite directions at different speeds.
Distance = Speed × Time
So, the distance travelled by A in 3 hours = 5 × 3 = 15 km
Distance travelled by B in 3 hours = 4 × 3 = 12 km
Therefore, the distance between A and B after 3 hours = 15 + 12 = 27 km
So, 27 km will be the distance between A and B after three hours. Hence, the fourth option is correct.
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