Teaching the Importance of Math to Students

When a kid in Reddit user dimetri's class was caught using his phone in math class, the teacher seized it, set a new pass code and then gave him this note to figure out the new code. That's one way to impress the importance of math skills on to your kids.

Link Via Gizmodo

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The deficiency is $1080.00
At 10% factor multiply by 1.11111
rounds to $1200 added to both cars
$21,800+$1200=$23000*.1=$2300
$600+$500+$1200=$2300
22% flat of the remainder added in and divided by 48 months...
$23,000-$2300=$20,700*1.22=$25,524/48=$526
$526 rounded to nearest dollar
PIN 0526

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Yeah, I'm actually confused by the question. Why would the dealer inflate the price of the car? Then he'd have to cheat MORE on the trade-in.

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Aren't there infinitely many solutions? (Perhaps it's constrained by knowing how many digits the passcode is.)

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If you can't get an interest rate better than that, you should buy a cheaper car and work on your credit rating.

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Let's see divide the (mumble mumble) carry the zero (mumble mumble) ... oh, I'll just give up using the phone!

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