1-the abbreviation Pbr contained in the questions was used for currency

2-Use compound interest factor tables as a priority for calculations.

3-you can use formulas if the solution to the problem is necessary.

Question 1) An engineering firm invests 23 000 Pbr in a new product. At the end of three years, the firm receives a retum of 28 500 Pbr from the investment. If the interest rate is 4%, what is the net present worth of the investment? The following figure is the cash flow diagram for the investment. 528500 Por P. 23000 PB Net Present Worth