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May 08, 2009

The Tip Calculator

IPhoneTipScreen Back when 15% was an appropriate tip, I used to calculate the amount by dividing the bill by seven then rounding up slightly (because 1/7 = 14.3%, not 15%). Then someone mentioned their method: divide the total by ten (i.e., just slide the decimal over) then add half again. Much easier, dang.

Now that a 20% tip seems to be the norm, I try to do the smart thing -- divide by ten and then double. But I often catch myself dividing by seven (old habit) then correcting myself by dividing by five.

Two links:

1.  Seinfeld's The Wizard.  Tip calculator at 9:40.  ("It does other things!")  I'm still amazed at how many stories Seinfeld crams into 28 minutes.  Tip calculator.  Interracial couple.  House in the Hamptons.  Kramer for Condo Board President.

2.  Excerpt from the Washington Post Style Invitational Week 523, in which readers submit ways to make modern life harder than necessary.  I think that one of the WP's examples was "Change 911 emergency number to 134599671A".


Photo yoinked from Carlos Perez.  It's his first app!

12:10 AM in Food | Permalink


I love Jerry Seinfield.
See his stand up comedy and bloopers at:

Posted by: ciel | May 8, 2009 11:01:15 AM

Excellent laughter! Let's go to the Gap!

Posted by: Valerie | May 21, 2009 8:16:41 PM