""| 150,000/(4 x 5 x 50) = 150, so that there must be about 150 piano
tuners in Chicago.""
| There seems to be a little problem with the math, here (duh). 4 x 5 x 50
=
| 1000, not 150, for starters.
The math is right as the formula reads, one hundred fifty thousand pianos
divided by 4 times five times fifty. The little slash mark after 150,000
means "divide by" so 150,000 divided by 4*5*50 does = 150. The little *
means "multiply by".
"then in one year (52 weeks) he would service 1,500 pianos."
With a calculator 1,500 pianos serviced a year by each of the 150 tuners
quickly shows 225,000 pianos tuned in a year. But it should be easier to
realize that 1000 tuners tuning 150,000 pianos would only tune 150 pianos
each.
I think it is a simple typoo---whoever wrote the article meant 1,000
per tuner but typed 1,500.
===ric
Reminds me of the time the news papers reported that the figures which
convinced the calif legislature to require fancy pump nozzels to prevent
gasoling fumes escaping had a digit wrong in the exponant of a formula, so
a 1000 times less gasoline went up in fumes than figured.
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