Consider the following for the next two (02) items that follow:

The total monthly electricity bill for a house consists of the sum of two parts, one part is proportional to number of rooms and the other part is proportional to number of units consumed. ₹ 400 is the monthly electricity bill for a house with 8 rooms and consuming 240 units and 320 is the monthly electricity bill for a house with 6 rooms and
consuming 200 units.

What is the monthly electricity bill for a house with m rooms and consuming n units?

Mathematics 2023 CDS Mathematics 2023 CDS 2023

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