Economics help: Kinked demand curve

Hello everybody

I am trying to solve this examination assignment. I feel like I do everything right, but the result just does not seem right.

Within a 6 month period the Demand can be described as follows:

Upper line segment (Q ; P) = (1.000 ; 305) and (2.000 ; 230)
Lower line segment (Q ; P) = (2.212,5 ; 147,5) Ep = - 1/3

I need to find the MR- and P-function

I calculate the two P functions to be the following:
Upper line segment: P = -0,075Q+380
Lower line segment: P = -0,2Q+590

And the MR functions
Upper line segment: MR = -0,15Q+380
Lower line segment: MR = -0,4Q+590

The intersept between Pupper and Plower is (254;1680)
MRupper intersept P=0 at (0;2533)
MRlower intersept P=0 at (0;1475)

And this just does not seem right to me.

To my knowledge, the kinked demand curve can't be solved unless both MR intersept with P=0 Q<1680

Can anyone help me?

/Dyregod

Please use propper sub-forum. I've move it now to General.

Originally Posted by zbor

Please use propper sub-forum. I've move it now to General.

Alright sorry :-)

It just thought it was not necessarily related to excel.

/Dyregod