Monday

September 22, 2014

September 22, 2014

Posted by **Larry** on Saturday, January 12, 2013 at 4:55pm.

- math -
**Reiny**, Saturday, January 12, 2013 at 5:43pmtotal time at 20 km/h = 40 km/ 20 km/h

= 2 hours

time of 1st part = 10/30 = 1/3 hr = 20 minutes

time of 2nd part = 30/15 = 2hours

for a total of 2:20 hrs

so it would take him 20 minutes extra

**Answer this Question**

**Related Questions**

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

MATH - Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per ...

math - Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per ...

Math - Two airplanes leave St. Louis at the same time and fly in opposite ...

Math - Two airplanes leave St. Louis at the same time and fly in opposite ...

Math/Algebra - Delivery company charges $10 plus 40¢ per kilometer or part of a ...

math - two horses gallop off in the sam direction. Trigger travels25 kilometers ...

math - Samantha’s speedometer reads in kilometers per hour. If the legal speed ...