Narendra Alwis Ltd. is preparing the production cost budget for the forthcoming year and has found

that there is a linear relationship between production volume and production costs.

They have found that a production volume of 1600 units results in production overheads of 40000 and

that a production volume of 3200 units a cost of 48000.

What would be the production costs for a production volume of 4000 units?