A part of monthly expenses of a family on milk is fixed which is Rs. 700 and remaining varies with quantity of milk taken extra at the rate of Rs. 25 per litre. Taking quantity of milk required extra as x litres and total expenditure on milk as Rs. y, write a linear equation from the above information.

A part of monthly expenses of a family on milk is fixed which is Rs. 7

1.	A part of monthly expenses of a family on milk is fixed which is Rs. 700 and remaining varies with quantity of milk taken extra at the rate of Rs. 25 per litre. Taking quantity of milk required extra as x litres and total expenditure on milk as Rs. y, write a linear equation from the above information.
A.	\[-25x+y=700\]
B.	\[20x+y=500\]
C.	\[20x+10y=300\]
D.	\[x+25y=900\]
Answer» B. \[20x+y=500\]

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