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How many hours (to the nearest hour) would it take you to count one billion if you counted one number
every twenty seconds?
hint 1
Three numbers could be counted in a minute. Similarly, try to find the count for an hour.
hint2
If 180 numbers are counted in one hour, one billion numbers can be counted in how many hours?

Respuesta :

elcharly64

Answer:

You would need 5,555,556 hours to count 1 billion.

Step-by-step explanation:

Proportions

If you count one number every 20 seconds, then you can count 3 numbers in a minute.

Counting 3 numbers in a minute will allow counting 3*60 = 180 numbers in an hour.

At the same counting rate, if you wanted to count 1 billion numbers, we can calculate the hours needed by dividing:

1,000,000,000 / 180 = 5,555,555.55

Rounding to the nearest hour, you would need 5,555,556 hours to count 1 billion.

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