Let's say it takes about 5 seconds to count to ten out loud. How many years will it take to count out loud to a billion? Ignore leap years and round your answer to one decimal place.
15.9 years. Crazy, isn't it?
These type of questions are best answered with proportions:
Cross multiply and solve:
\(x=500000000secs\) (5 hundred million seconds)
Now, let's use another proportion to solve for how many years:
Cross multiply and solve again:
That's insane! Almost 16 years!