Question

A one-minute advertisement on a local television station during prime time (8- 10 p.m. on weeknights) costs the advertiser $12,800. To the nearest cent, how much does the advertisement cost per second? Show your work using dimensional analysis and Giant Ones.

Answer 1

Cost = $12,800
Time = 2 hours, 8 - 10 pm

Cost per hour = ($12800)/(2) = $6400 per hour

There are 60*660 = 3600 seconds per hour.
Therefore the cost per second is
($6400)/(3600 s) = $1.7778 per second  = $1.78 per second (nearest cent)

Answer: $1.78 (nearest cent)