Estimates for a construction project appear in the following table: Dear optimistic most likely pessimistic Cost ($) 60,000 80,000 120,000 Annual profit ($) 16,000 15,000 13,500 Useful life (years...

Estimates for a construction project appear in the following table: Dear optimistic most likely pessimistic Cost ($) 60,000 80,000 120,000 Annual profit ($) 16,000 15,000 13,500 Useful life (years) 10 10 10 Residual value ($) 0 0 0 Calculate the weighted average for costs and benefits, assigning 4 times more weight to the most probable estimate. Calculate the average internal rate of return. a)Weighted Average of Cost b)Weighted Average of Annual Profits c)Average internal rate of return