Good day kindly assist?

Question 10 Not yet answered Marked out of 2.00 Tura Ltd's inventory purchased and sold a recent week were as follows: August 1 Balance 70 units @ N$100.00 per unit. 10 Purchased 80 units @ N$118.75 unit 11 Sold 120 units @ N$150.00 per unit 12 Purchased 70 units @ N$120.00 per unit 15 Returned 30 units Flag question Tura Ltd returned 30 units to the supplier. These units relate to the purchase made on 10 August 2021. Calculate the value of closing on 15 August 2021 according to the First-in-First-out (FIFO) stock valuation method