Q) The average annual cost of damages caused by floods to Camella subdivision is estimated to be ₱500,000. To build a gravity dam to protect the area from floods would cost ₱3,000,000 and would involve an annual maintenance cost of ₱25,000. With the interest rate of 8% compounded annually, how many years would it take for the dam to pay for itself? Solve it correctly. And not solve in excel works. Typed or handwriting use onlys

A highway is to be built connecting Maud and Bowlegs. Route A follows the old road and costs $4 million initially and $210,000/year thereafter. A new route, B, will cost $6 million initially and $180,000/year thereafter. Route C is an enhanced version of Route B with wider lanes, shoulders, and so on. Route C will cost $9 million at first, plus $260,000 per year to maintain. Benefits to the users, considering time, operation, and safety, are $500,000 per year for A, $850,000 per year for B, and $1,000,000 per year for C. Using a 7% interest rate, a 15-year study period, and a salvage value of 50% of first cost, determine which road should be constructed.

The Dry Dock is considering a project with an initial cost of $107,770 and cash inflows for years 1 to 3 of $37,200 $54,600 and $46,900 respectively. What is the IRR?

Please make sure you have the right answer! I have asked this question too many times and all the answers were wrong!!!