A firm currently makes all sales on credit for up to $30$ days and offers no cash discount. The unit variable cost and selling price are INR $15$ and INR $25.$ The management is considering a four$-$percent cash discount for payment within ten days. The sales are expected to increase by $25\%$ from the current $2,00,000$ units, and the average collection period will fall from $25$ days to $20$ days as fifty percent of sales are expected to avail a discount and pay by day ten. Should the proposed discount be offered, assuming no change in the working capital requirement, no bad sales, and zero$-$tax?