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How many people in the world are looking through a telescope right now? The fraction of...

How many people in the world are looking through a telescope right now?

The fraction of people doing any activity is equal to the fraction of time it takes to do that activity. In symbols, N/Ntotal = T/Ttotal.

All numbers must be entered as, say, 5000 or 5e3 or 5.0e3 and not with commas as in "5,000"

All numbers must be entered as, say, 5000 or 5e3 or 5.0e3 and not with commas as in "5,000" and not as fractions as in "3/4".

1 Estimate the number of people in the world.

2 Estimate the percentage of people with a telescope.

3 Estimate the average time spent observing through a telescope (in minutes).

4 Estimate the number of people currently looking through a telescope.

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