The distance between point A and point B is 400 km. A person starts from point A with a speed of x km. and at the same time another person starts from B with a speed of x+10 km. After 2 hours they meet each other. Find the ratio between their speeds.

Using the relative speed formula for objects moving in opposite directions, their relative speed is the sum of their individual speeds, so x plus x + 10 equals 400 divided by 2. Solving this gives 2x + 10 equals 200, which means 2x equals 190 and x equals 95. The speeds of the two people are 95 km/hr and 105 km/hr, making their ratio 19 to 21. Since this ratio is not listed among the provided choices, the correct answer is None of these.

• Thanks
• Wrong explanation