Sally has just purchased a home and wants to have an in-ground pool installed. She calls Cool Pools, the company that put in her neighbors' pools. When the company rep comes to her property, he does some soil tests that are standard for the industry and gets the same results as he got when the other pools were put in, so the company gives her a price quote of $16,000. When Cool Pools begin excavating, it discovers solid rock 4 feel below ground level. The neighbors had no such rock. Cool Pools stops work and informs Sally that it will have to use explosives to remove the rock and the cost of the pool will now be $32,000.A) Sally can have the contract discharged based on frustration of purpose. B) Sally can have the contract discharged based on impracticability. C) Sally is under contract and will have to pay the new price. D) Sally can have the contract discharged based on impossibility.

Imagine us is a startup that offers high definition 3d prenatal ultrasounds for high-end customers. the service process includes four activities that are conducted in the sequence described below. (the time required for each activity is shown in parentheses): activity 1: welcome a patient and explain the procedure. (20 minutes)activity 2: prep the patient (e.g., show them to the room, apply ultrasound gel). (17 minutes) (*your id number represents the amount of time needed to complete this task)activity 3: take images. (5 minutes)activity 4: discuss diagnostic with patient. (20 minutes)at each location there are employees (servers) s1, s2, and s3. the assignment of tasks to servers is the following: s1 does activities 1 and 2.s2 does activity 3.s3 does activity 4.a. what is the capacity of this process (in customers per hour)? b. suppose 3 patients arrive every hour on average. ignoring any “start of day” or “end of day” effects, what are the utilizations of all three servers (%)? c. suppose each activity can be done by any server and any server can do any set of activities. however, each activity is done by only one server. for example, a possible assignment includes: s1 does activity 1, s2 does activity 2, and s3 does activities 3 and 4. of course, the original assignment of servers to activities is also feasible. what is the maximum capacity of the process (in customers per hour)? d. now consider the capacity measures in (c) and (a), what is the percentage change? why can you improve capacity without using additional resources? (there is no free lunch, right? )note: for all hw assignments, show your process of getting the results. only providing the final answers is not acceptable and will get 0%. if necessary, use a separate sheet of paper to show your work.