Twenty five machines working at a rate of 9 hours per day can complete a job in 16 days. A contractor intends to complete the job in 10 days using similar machines working at a rate of 12 hours per day. Find the number of machines the contractor requires to complete the job.

Answer 1

assuming each day has 8 hours

rate=1job/(25*9*16)== 0.000277777778 jobs/hr

or 0.000277777778=1/(10*12*NumberMachines)
or number machines=1/(10*12* 0.000277777778)=30 machines

Answer 2

What type of speech is President Franklin Roosevelt's first inaugural address?
A. Informative
B. Debate
C. Entertaining
D. Persuasive

Answer 3

D. Persuasive