For a particular period a company produces 160kg consuming 200kg of raw materials.For the next period,the output is 320kg consuming 420kg raw materials and for third output is 400kg consuming 400kg?

It seems like you are providing information about the production and raw material consumption of a company for three different periods.

For the first period, the company produced 160kg of output while consuming 200kg of raw materials.

For the second period, the company increased its output to 320kg but also increased its raw material consumption to 420kg.

For the third period, the company further increased its output to 400kg but maintained the same raw material consumption of 400kg.

Calculate productivity