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1
A garden snail's average speed is about ​0.029 mi/h. 

The North American X-15's top speed is about 4,520 mi/h. 


How much time would it take for each to travel across the United States, a distance of about 2,800 miles?
2
An AU, or astronomical unit, is the distance between the Sun and the Earth. An AU is about 149,600,000 km. 
​
The planet Venus is about 0.72 AU from the Sun.

What is the average distance of Venus from the Sun in kilometers?
3
The average flow rate of a kitchen faucet is about 8.3 liters per minute.

An Olympic-sized pool can hold about 2,500,000 liters of water.

Approximately how many months would it take to fill up an Olympic-sized pool with a kitchen faucet?
4
A light-year is the distance light travels in one Earth year. A light-year is about 9,500,000,000,000 km.

Superman, according to this website, can fly at a speed of 148,730,860,964,505,632 km/h (148.7 quadrillion km/h).


Approximately how many seconds would it take Superman to travel one light-year?
5
The Bugatti Veyron's top speed is about 408.84 km/h (254.04 mph) and costs around $2 million.

A typical top speed of a bicycle is about 40 km/h (25 mph) and costs about $1,000 for a nice one.

What is the ratio of bicycle to Bugatti in terms of speed per dollar?
6
A billion is a large number. For example, a billion seconds add up to about 32 years! 

An average annual income of a full-time worker in the U.S. in 2018 was about $50,000. 


How many years would it take for this worker to make $1 billion?
7
A human brain can compute at a rate of 2.2 billion megaFLOPS.

A cat's brain can compute at a rate of 61 million megaFLOPS.
​

What is the computing rate of humans to cats?
8
A human brain can store about 3.5 quadrillion bytes of data.

A cat's brain can store about 98 trillion bytes of data.
​

What is the brain storage capacity of humans to cats?
9
As of April 2020, the U.S. National Debt per citizen is about $72,000, while the debt per taxpayer is about $191,000.

There are 330,515,290 U.S. citizens as of March 31, 2020. 
​

How many taxpayers are there in the U.S. based on the numbers above?
10
Apple came out with the iPhone 2G in 2007. The 8 GB model sold for $599 when it first came out.

In 2020, Apple will sell the iPhone 11 with 256 GB for $849.


What is the ratio of dollar per GB of the iPhone 2 to the iPhone 11?
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