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(A) The relationship between selling price and demand is linear.Assuming selling price per liter along the $x$-axis and demand along the $y$-axis,we h

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$1340$

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(A) The relationship between selling price and demand is linear.Assuming selling price per liter along the $x$-axis and demand along the $y$-axis,we have two points,$(14, 980)$ and $(16, 1220)$,in the $XY$ plane that satisfy the linear relationship.The equation of the line passing through $(14, 980)$ and $(16, 1220)$ is given by:$y - 980 = \frac{1220 - 980}{16 - 14}(x - 14)$$y - 980 = \frac{240}{2}(x - 14)$$y - 980 = 120(x - 14)$$y = 120(x - 14) + 980$When $x = 17$ (price per liter):$y = 120(17 - 14) + 980$$y = 120(3) + 980$$y = 360 + 980 = 1340$Thus,the owner could sell $1340$ liters of milk weekly at Rs $17$ per liter.

The owner of a milk store finds that he can sell $980$ liters of milk each week at Rs $14$ per liter and $1220$ liters of milk each week at Rs $16$ per liter. Assuming a linear relationship between selling price and demand,how many liters could he sell weekly at Rs $17$ per liter?

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