Friday

April 18, 2014

April 18, 2014

Posted by **kayla** on Thursday, September 25, 2008 at 7:05pm.

I got 2.5 hours but i think that is totally wrong?????

- pre calc -
**bobpursley**, Thursday, September 25, 2008 at 7:18pmcombined rate=field/3hrs + field/5hrs

time=field/(field/3 + field/5)

time= 15/(8)= less than your time.

**Related Questions**

math - If A farmer uses a large tractor,she can plow a filed in eight hours. Her...

Physics - A tractor pulls forward a moving plow with a force of 2.5*10^4N, which...

Math - Joey can plow a field alone for in four hours. It takes Luigi five hours ...

Physics 12th grade - A farm tractor is pulling 2 pieces of equipment east, with ...

math - Suppose that the time (in hours) required to repair a machine is an ...

math - A farmer's tractor has gotten stuck in a muddy pasture. To try to free ...

Maths - A farmer deposits R11 944, for 60 months to buy a tractor.suppose that ...

math - 5. A bus on a regular schedule takes 3 1/4 hours to reach its ...

algebra - robs tractor is just as fast as lucy's. It takes rob 2 hours more than...

math - A manufacturer makes two products A and B, each of which is processed in ...