How many dollars does johnson & johnson make every 20 seconds?

Johnson & Johnson make $51,433.28 every 20 seconds

Explanation:

The complete question is

I'm playing a riddle game thing and one of the questions is

"How many dollars does Johnson & Johnson make every 20 seconds?"

I found that they make 81.1 billion dollars yearly, but I have no clue how to get it to 20 seconds.

Remember that

1 year=365 days

1 day=24 hours

1 hour=60 minutes

1 minute=60 seconds

so

Convert year to seconds  

1 billion=1,000 millions

1 billion=1*10^9

81.1 billion dollars=81.1*10^9 dollars

we have

Convert to $/sec

Multiply by 20 sec

therefore

Johnson & Johnson make $51,433.28 every 20 seconds

Project B.

Explanation:

The easiest way to solve this problem is to assume a dummy discount rate  and then calculate the net present value (NPV) of each project. Let assume the rate of 10%, we have:

NPV of project A (project with cash inflows at the end of each year)= 0

NPV of project B (project with lump sum inflows at the end of year 8) = 26,472.

So, we should choose project B.