A trader bought 40 shirts for Birr 220 and sold them at Birr 27 each. Did he gain or loss percentage? Find the percentage loss or profit accordingly​

Step-by-step explanation:

If P be the printed price of a commodity, the rate of sales tax be r% and S be the selling price then

S=P(1+\dfrac{r}{100}) and Sales Tax=

S-P= \dfrac{P \times r}{100}

This is the formula

I hope you understand

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step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

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