Sunland company uses a periodic inventory system. details for the inventory account for the month of january 2017 are as follows:
units per unit price total
balance, 1/1/2017 290 $5.00 $1450
purchase, 1/15/2017 140 ..5.10 714
purchase, 1/28/2017 140 ..5.30 742
an end of the month (1/31/2017) inventory showed that 230 units were on hand. how many units did the company sell during january 2017?

Aproduction line has three machines a, b, and c, with reliabilities of .96, .86, and .85, respectively. the machines are arranged so that if one breaks down, the others must shut down. engineers are weighing two alternative designs for increasing the line’s reliability. plan 1 involves adding an identical backup line, and plan 2 involves providing a backup for each machine. in either case, three machines (a, b, and c) would be used with reliabilities equal to the original three. a. compute overall system reliability under plan 1. (round your intermediate calculations and final answer to 4 decimal places.) reliability b. compute overall system reliability under plan 2. (round your intermediate calculations and final answer to 4 decimal places.) reliability c. which plan will provide the higher reliability? plan2plan1