Question

The amount collected per month from a consumer of
electrical power consists of two parts - a fixed
charge for providing the service and a variable
charge which is directly proportional to the number
of units of power consumed. An amount of 3700 is
collected from the consumer when he consumed
50 units in a month. It is also noticed that when the
consumption increases from 100 units per month to
200 units per month, the bill amount increases to
5/4 times that of the former. How much is the fixed
charge per month?
(A) 3600 (B) 350 (C) 500 (D) 400​

Answer 1

Answer:

answer for this question is 3600.

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Answer 2

Answer:

Step-by-step explanation:

F + 100V = 4/5 (F + 200V)

By solving

F/V = 300

F/6 = 50V

F + 50V = 700

F + F/6 = 700

7F/6 = 700

F = 600

So, the fixed charge is 600