Question

# 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 $$x$$ litre and total expenditure on milk Rs. $$y$$ , write a linear equation representing above information.

Solution

## Extra milk required = $$x$$ litretotal expenditure = Rs $$y$$cost of extra milk = Rs. $$25$$/litreextra expense $$= 25\times x =$$ Rs. $$25x$$fixed expense = Rs. $$700$$Total expense = fixed expense + extra expense$$\Rightarrow y = 700+25x$$Maths

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