Four question in one question ? can u answer ??

<p style="text-align:left;">If the The cost of stock of the first period124000 and270000 purchases and expenses10,000 transfer purchases and returns and allowances4000 purchases and stocks last term, the SR60000:</p> <p style="text-align:left;"><span><span>1</span> <span>/</span> <span>=</span> <span>total</span> <span>purchases</span>: </span></p> <p style="text-align:left;"><span><span>260000</span> <span>SR</span> <span>280000</span> <span>SR</span> <span>284000</span> <span>SR</span> <span>300,000</span> <span>SR</span> </span></p> <p style="text-align:left;"><span><span>2</span> <span>/</span> <span>cost</span> <span>=</span> <span>Net</span> <span>purchases</span>: </span></p> <p style="text-align:left;"><span><span>267000</span> <span>SR</span> <span>260000</span> <span>SR</span> <span>540000</span> <span>SR</span> <span>276000</span> <span>SR</span> </span></p> <p style="text-align:left;"><span><span>3</span> <span>/</span> <span>cost of goods</span> <span>available for sale</span> <span>=</span>: </span></p> <p style="text-align:left;"><span><span>300,000</span> <span>SR</span> <span>270000</span> <span>SR</span> <span>400000</span> <span>SR</span> <span>266000</span> <span>SR</span> </span></p> <p style="text-align:left;"><span><span>4</span> <span>/</span> <span>cost of goods sold</span> <span>=</span>: </span></p> <p style="text-align:left;"><span><span>430000</span> <span>SR</span> <span>400000</span> <span>SR</span> <span>90000</span> <span>SR</span> <span>340000</span> <span>SR</span></span></p> <p style="text-align:left;"> </p> <p style="text-align:left;"> </p>