Julie and Soma start from the same point and walk in opposite directions. Julie walks 4 km/h faster than Soma. After 4 hours, they are 40 km apart. How fast did each walk?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Julie – 7 km/h; Soma – 3 km/h.
Given that
Julie and Soma start from the same point and walk in opposite directions.
After 4 hours, they are 40 km apart
Let the speed of Soma and Julie be X and Y km/h respectively
According to the question
Relative speed in opposite direction = X + Y = 40/4 = 10 .....(1
Julie walks 4 km/h faster than Soma
⇒ X - Y = 4 ......(2
Equation 1 + Equation 2
⇒ 2X = 14
⇒ X = 7 km/h
⇒ Y = 7 - 4 = 3 km/h
Hence, The speed of Julie – 7 km/h and Soma – 3 km/h