Two boys start running at the same time in the same direction at a speed of 10 km/hr and 12 km/hr respectively. In what time they will be 8 km apart?

3 hr 4 hr 5 hr 6 hr

4 hr

Formulae: Speed = \(\frac{ Distance}{Time }\) 12 - 10 = \(\frac{ 8}{Time }\) Time = \(\frac{ 8}{2 }\) = 4 hours