NCERT 2022 | विद्युत - L20 | Electricity | Class 10 विज्ञान | Hindi Medium | Ruchi Ma'am| 6 PM

There are three runners Deepak, Sandeep and Pawan with their respective speeds of 10 km/h, 20 km/h. They are initially at P and they have to run between the two points P and Q which are 10 km apart from each other. They start their race at 6 am and end at 6 pm on the same day. If they run between P and Q without any break, then how many times they will be together either at P and Q during the given time period?