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.
+2446 15.9 years. Crazy, isn't it?
These type of questions are best answered with proportions:
\(\frac{5secs}{10}=\frac{xsecs}{1000000000}\)
Cross multiply and solve:
\(5000000000=10x\)
\(x=500000000secs\) (5 hundred million seconds)
Now, let's use another proportion to solve for how many years:
\(\frac{31536000secs}{1yr}=\frac{500000000}{xyr}\)'
Cross multiply and solve again:
\(31536000x=500000000\)
\(x=\frac{500000000}{31536000}\approx15.9years!\)
That's insane! Almost 16 years!
