For the cash flow diagram shown below. Calculate the value of Q. Investment in a crane is expected to produce profit from its rental of $ 15,000 the first year it is in service. The profit is expected to decrease by $2,500 each year thereafter. At the end of six years assume the salvage value is zero. At 12% interest the present worth of the profits is nearest to what? Assume you borrowed $50,000 at an interest rate of 1 percent per month, to be repaid in uniform monthly payments for 30 years. In the 163rd payment, how much of it would be interest, and how much of it would be principal