An item is used at a uniform rate of 60,000 units per year. No shortage is allowed anddelivery is at an infinite rate. The ordering, removing and hauling cost is Rs. 13 per order, while inspection cost is Rs. 12 per order. Interest costs Rs. 4.066 and, deterioration and obsolescence cost Rs. 0.004 respectively per year for each item actually held in inventory plus Rs. 0.02 per year per unit based on the maximum number of unis in inventory. Calculate the EOQ. If lead time is 20 days, find re- order level.

Calculate the gross profit margin for an item that cost the business \( \$ 12 \) and sold for \( \$ 30 \). Gross Profit = \( \$ 18 \) Gross Profit Margin = [?]\%

Calculate the gross profit margin for an item that cost the business \( \$ 3 \) and sold for \( \$ 25 \). Gross Profit = \( \$ 22 \) Gross Profit Margin = [?]\%

A lawnmower was traded in for R236 after 10 years. The depreciation was calculated at \( 9,2 \% \) p.a. on a straight-line basis. Determine the cost of the lawnmower 10 years ago.

You invest $2,500 in an account that earns 4% interest compounded quarterly. How much will the investment be worth after 5 years?

A perfectly competitive firm has the following information in the short run. Total cost equation is given as \( T C=3 q^{2}+20 q+75 \); and the firm is currently producing 10 units of output which is the profit maximizing output level. 1. Find the profit maximizing price at which 10 units will be sold. 2. Find the level of profit or loss the firm is making in the short run. 3. What is the firm supply curve (equation)?