From the following data, you are required to compute the amount of fixed, variable and total semi-variable expenses for the month of October 2009, where the production is 50 units.

Month

Production (Units)

Semi-Variable Expenses (Rs.)

April 2009

60

320

May 2009

40

280

June 2009

70

340

July 2009

100

400

August 2009

80

360

September 2009

90

380