Question

a girl while riding a bicycle moves with the speed of 10 km /h for 2 hours and with the speed of 15km/h for the next 3 hours.find the total distance moved by her and her everage speed

Answer 1

Hope you find your answer...

Answer 2

Let me lead you to the solution;

• In the first 2 hours the girl was riding at a speed of 10km/h this means that she covered a distance of 20 kilometers.
• In the next 3 hours she cycled at a speed of 15km/hr which means that she covered a distance of 45 kilometers.
• The total distance covered by the girl is simply 45+20 =65 kilometers.
• The average speed is total distance divided by the total time taken which is 65 kilometers divide by 5 hours. this gives us 13km/h as the average speed of the girl.