OHaganBooks has two principal competitors: JungleBooks and FarmerBooks. Combined website traffic at the three sites is estimated at 21,500 hits per day. Only 10% of the hits at OHaganBooks result in orders, whereas JungleBooks and FarmerBooks report that 20% of the hits at their sites result in book orders. Together, the three sites process 3,500 book orders per day. FarmerBooks appears to be the most successful of the three and gets as many book orders as the other two combined. What is the traffic (in hits per day) at each of the sites

You are the manager of a large crude-oil refinery. as part of the refining process, a certain heat exchanger (operated at high temperatures and with abrasive material flowing through it) must be replaced every year. the replacement and downtime cost in the first year is $165 comma 000. this cost is expected to increase due to inflation at a rate of 7% per year for six years (i.e. until the eoy 7), at which time this particular heat exchanger will no longer be needed. if the company's cost of capital is 15% per year, how much could you afford to spend for a higher quality heat exchanger so that these annual replacement and downtime costs could be eliminated?