a part of monthly expenditure of a family is constant and the remaining varies with the price of wheat. when the price of wheat is 800 quintal the total monthly expenditure is rs.5400 and when it is rs 1000 per quintal, the total monthly expenditure is rs.6 000 . find the total monthly expenditure of the family when cost of wheat is rs. 950 per quintal
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let the expenditure is given by=a+bx
where a is the constant part and x be the price of wheat
1st equatin
5400=a+800b
6000=a+1000b
solving we get a=3000 b=3
now when price is 950 then expenditure is
3000+(950)3=5850
where a is the constant part and x be the price of wheat
1st equatin
5400=a+800b
6000=a+1000b
solving we get a=3000 b=3
now when price is 950 then expenditure is
3000+(950)3=5850
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