Ballpark — April 20, 2026
Answers to that day's 5 daily estimation questions.
About how much does a typical paperback book weigh?
~300 g
A paperback often weighs a few hundred grams.
About how many hours per day does an average cat sleep?
~15 hours/day
Cats are champion sleepers—often 12–16 hours a day.
About how many US pennies does it take to weigh one pound?
~181 pennies
A modern penny weighs 2.5 grams, so ~145 makes a pound.
About how many hours of listening can wireless earbuds last on a single charge?
~6 hours
Many earbuds land around 4–8 hours per charge.
About how many megabits per second is a typical home internet download speed?
~300 Mbps
Home internet speeds often range from tens to hundreds of Mbps.