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Question

The cost of the milk per litre is $$15$$. Draw the graph for the relation between the quantity and cost. Hence find :
i) the proportionality constant.
ii) the cost of $$3$$ litres of milk.


Solution


Let $$x$$ de 642073_605178_ans_5f2e84439f394cfe9bed4358e7b80a5f notes Quantity of milk (in litre)
$$Y$$ denotes the cost of milk (in Rs.)
 x 1
 2 3 4 5 6 7
 y 1530  45 60 75 90105 
The proportionality constant $$K=15$$
The cost of $$3$$ litres of milk $$= 45$$
642073_605178_ans_5f2e84439f394cfe9bed4358e7b80a5f.png

Mathematics

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