Use the information in the table (all times are in days) to determine the lowest extra cost for an 18-day project.
A) $380
B) $400
C) $420
D) $440

Question

Use the information in the table (all times are in days) to determine the lowest extra cost for an 18-day project. 
A) $380 
B) $400 
C) $420 
D) $440

Quizplus · Accepted Answer

To determine the lowest extra cost for an 18-day project, we need to look at the 2 options that have a duration of 16 and 18 days: 
- Option A with a duration of 16 days has a cost of $900 and a crash time of 14 days with an extra cost of $20 per day. Therefore, to crash it to 18 days, we need to add 4 days at a cost of $20 each, which gives us an extra cost of $80. The total cost for Option A with a duration of 18 days is $900 + $80 = $980.
- Option C with a duration of 18 days has a cost of $1000 and a crash time of 17 days with an extra cost of $30 per day. Therefore, to crash it to 18 days, we need to add 1 day at a cost of $30, which gives us an extra cost of $30. The total cost for Option C with a duration of 18 days is $1000 + $30 = $1030.
Between these two options, Option A is the cheaper with a total cost of $980, so the answer is B.

Use the Information in the Table (All Times Are in Days)