I set it up as a ratio with hours on the top and the fraction of the job on the bottom. It looks like this: 5/(2/3) / x/1, because 1 is the whole job if 2/3 is only a fraction of it. Cross multiplying gives you 2/3x = 5. Solving for x gives you that it will take 7.5 hours to complete a whole job if it takes 5 hours to complete 2/3 of it.
Is this a riddle?? Or are you really doing this :-(
Answer:
V=14
Step-by-step explanation:
3v=42 divide both sides by 3. getting v=14
Round about...90 feet per second
