Question

form a linear equation to calculate bill for consumption less than 400 units for Hariyana states ( take total bill y and consumption of unit x.

Answer 1

let the total bill be y and consumption of unit be x.
given the consumption of units is less than 400.
so it can be anything between 0 and 400.
case 1: the consumption is less than 200 units
the cost of each unit for the first 200 units = rupees 5.40
y = 5.40x
case 2: the consumption is more than 200 units
the cost of each unit for the first 200 units = rupees 5.40
the cost of each unit for the next 200 units = rupees 5.41
y = 5.40 * 200 + 5.41x