Cbse Open Text Based Assessment Worksheet - Class Ix - Board Of High School And Intermediate Education - 2015-2016 Page 28
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2826. In Chennai power tariff, eight hours load shedding per day impact is taken for towns.
From 200 units of a house, if x units are used during shed hour, then form a linear
equation in total cost factor and units consumed. Also, find the total cost, if
consumption during shed hour is 50 units.
(3 marks)
27. In Mumbai power tariff, eight hours load shedding per day impact is taken for towns.
From 200 units of a house, if x units are used during shed hour, then form a linear
equation in total cost factor and units consumed. Also, find the total cost, if
consumption during shed hour is 50 units.
(3 marks)
28. In Kolkata power tariff, eight hours load shedding per day impact is taken for towns.
From 200 units of a house, if x units are used during shed hour, then form a linear
equation in total cost factor and units consumed. Also, find the total cost, if
consumption during shed hour is 50 units.
(3 marks)
29. Aditya has three bedrooms flat in a city of Chennai. He installed 10 fans, 12 tube lights.
He uses his refrigerator for 24 hours, electric iron for 30 minutes, Computer for 2 hours
and TV for 5 hours. He wishes that his monthly consumption of electricity should be
700 units per month. Establish a linear equation for the same assuming that he is using
all fans and tube lights for x hours and one air conditioner for y hours per day for a
month of 30 days, where AC take load of 1900 W.
(3 marks)
30. The electricity tariff plan of a particular state is as follows:
First 100 units
Rs 3.00/unit
Next 150 units
Rs 3.50/unit
Next 150 units
Rs 5.00/unit
Any units above 400 Rs 8.00/unit
The fixed charge is Rs 300. Form a linear equation if the total bill of a particular house
(excluding surcharge and electricity tax) in the state is above Rs 2,000 for a month
assuming that x units are consumed in the actual bill.
(3 marks)
Prepared by: M. S. KumarSwamy, TGT(Maths)
Page - iv -
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