Question

a part of monthly expenditure of a family is constant and the remaining varies with the price of rice . when the price of rice is Rs.1500 per quintal , the total monthly expenditure is Rs. 8500 and when it is Rs. 1800 per quintal ,the total monthly expenditure is Rs.9400 .Find the total monthly expenditure of the family when the cost of rice is 2000 per quintal.

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Answer 1

Answer:

10,000/-

Step-by-step explanation:

Let X be the constant part of expenditure and Y the quantity of rice bought...

Thus,

Y(1500) + X=8500

Y(1800) + X=9400

Y(2000) + X=?

{substitute Y=3}

3000 + X=8500    (X=4000)

5400 + X=9400    (X=4000)

6000+ X=10000   (X=4000)

Hence, total monthly expenditure is 10,000/- when constant expenditure is 4,000/-