The total cost of a certain length of a piece of cloth is Rs. 200. If the piece was 5 m longer and each metre of cloth costs Rs. 2 less, the cost of the piece would have remained unchanged. How long is the piece and what is its original rate per metre?
Let the length of cloth = x.
Cost of cloth per m = y.
Conditions- If the piece were 5m longer and each metre of cloth cost Rs. 2 less.
Put value of y from eq(i) in eq(ii)
or,
or,
or,
Length of the piece = 20m
Original cost per metre