Posted by **tanmay bhoite** on Wednesday, April 11, 2012 at 2:20am.

On a long journey if 10% of the distance is covered at an average speed of 40 km/h and 90% of the distance is covered at an average speed of 90 km/h. What is the average speed for the entire journey? How does this answer change if the percentages relate to time rather than distance, that is, if 10% of the duration is covered at 40 km/h and 90% of the duration is covered at average speed of 90 km/h.

## Answer This Question

## Related Questions

- Math - Kate cycles the first 350 km of a 470 km journey at a certain average ...
- sCiEnCe - Can you define speed, motion, constant speed and average speed? And ...
- math - Q) (Speed) Ahmed drives from Abu Dhabi to Dubai. The journey takes him 1 ...
- Physics - These are “plug-in-the-number” tasks to familiarize you with the main ...
- Algebra - A train covered the distance of 400 km between A and B at a certain ...
- Algebra - A train covered the distance of 400 km between A and B at a certain ...
- Algebra - A train covered the distance of 400 km between A and B at a certain ...
- Algebra - A train covered the distance of 400 km between A and B at a certain ...
- physics - A runner, beginning at rest, completed a 50 m run with a final speed ...
- Physics - A truck speed increases uniformly from 10 m/s to 30 m/s in 20 seconds...

More Related Questions