Solution to An Old Problem About Shopping and Taxes

I am going to use rot13 to give answers:

Copy the encrypted text below: (use the Copy command) which is Ctrl-C on Windows computers and Command-C on Apple computers.

Zl Erprvcg sebz Cnaren Oernq

SBBQ: fvk qbyynef naq 59 pragf
GNK: sbegl guerr pragf
GBGNY: frira qbyynef naq gjb pragf
PHFGBZRE CNVQ: frira qbyynef naq svir pragf
PUNATR QHR: guerr pragf

Go to:  http://www.rot13.com

Paste the encrypted text into the box, using (Ctrl–V or Command-V) Click on “Cypher.” You should see the decoded answer.

Answer to Units Conversion As A Joke

I am going to use rot13 to give answers:

Copy the encrypted text below: (use the Copy command) – it is Ctrl-C on Windows computers and Command-C on Apple computers.

Wbxr nafjre: ur pbhyq svaq bhg ol purpxvat uvf fcrrqbzrgre.

Havgf pbairefvba:

60 srrg   3600 frpbaq   1 zvyr
------- k      ------ k ------ =   sbegl cbvag avar zvyrf cre ubhe
frpbaq         ubhe    5280 srrg

Ur vf fcrrqvat ohg whfg n yvggyr ovg.

Go to: http://www.rot13.com

Paste  using (Ctrl–V or Command-V) the encrypted text into the box. Click on “Encrypt.” You should see the decoded answer.

Units conversion as a joke, corrected

Dr. Steve is driving his car. He is traveling at 60 feet per second and the speed limit is 40 miles per hour. Is Dr. Steve speeding?

Answer in next blog.

Units Conversion As A Joke

Dr. Steve is driving his car. He is traveling at 60 feet per second and the speed limit is 40 miles per hour. I Dr. Steve speeding?

Answer in next blog.

An Old Problem About Shopping and Taxes

On February 10, 2007 “Steve” went to Panera Bread in Eagan MN and bought a “U Pick 2” (soup, sandwich and an apple) for $6.59.

Sales tax in Eagan was 6.5% back then. In Minnesota, tax is rounded to the nearest cent.

Three questions:

What was the tax?

What was the total, including tax?

How much change would Steve get if he presented a $5 bill, a $2 bill, and a nickel (five cents)?

-------------------------------------------

Note: November 2012

The sales tax in Eagan has gone up to 7 1/8 %  (7.125%). The actual ancient receipt will be posted, somewhere in Seward.

Crypt Arithmetic Problems That Are Easy To Solve, Revised

Students in 5th grade math challenge at Seward.

Please perform both checks and write on paper.
Write your name and your E2 teacher's name on
the paper and hand in to Karen Utter during your normal Monday or Wednesday class, but as soon as possible.

We want to verify that you are reading this blog.
Please tell your friends about it.

The assignment may seem trivial but we just want to verify that you are reading this blog.

2012 6th Grade Math Challenge Problem #1
162
+XD
-----
2D7
D must equal 5 so we have:
162
+X5
-----
257
When we add X to 6, we must get 5 and a carry of 1.
So, 6 + X = 15, or X = 9
162
+95
-----
257

Check: Do the above with a calculator and verify that it is correct.

2012 6th Grade Math Challenge Problem #5
ON + ON + ON + ON = GO
Adding ON 4 times is the same as multiplying by 4.
ON
x4
-----
GO
Try various values for N.
N can't be zero because then, N and O would be the same.
If N is 1, O = 4 and 4 x O would be 16, generating a carry and giving a three-digit answer.
If N is 2, O = 8 and 4 x O would be 32, again generating a carry and giving a three-digit answer.
If N is 3, 4 x 3 = 12. That makes O = 2 with a carry of 1.
G = 4 x 2 + 1, or 9.
This gives:
23
x4
----
92
Check: 23 + 23 + 23 + 23 = 92
Verify this with a calculator.

Crypt Arithmetic Problems That Are Simple to Explain

Crypt Arithmetic Problems That Are Simple to Explain


Students in 5th grade math challenge at Seward.
Please perform both checks and write on paper.
Write your name and your E2 teacher's name on
the paper and hand in to Karen Utter on Monday
Nov 5 or Wed Nov 7.

2012 6th Grade Math Challenge Problem #1
162
+XD
-----
2D7

D must equal 5 so we have:

162
+X5
-----
257

When we add X to 6, we must get 5 and a carry of 1.
So, 6 + X = 15, or X = 9

162
+95
-----
257

Check: Do the above with a calculator and verify that it is correct.



2012 6th Grade Math Challenge Problem #5

ON + ON + ON + ON = GO

Adding ON 4 times is the same as multiplying by 4.

ON
x4
-----
GO

Try various values for N.

N can't be zero because then, N and O would be the same.

If N is 1, O = 4 and 4 x O would be 16, generating a carry
and giving a three-digit answer.

If N is 2, O = 8 and 4 x O would be 32, again generating a
carry and giving a three-digit answer.

If N is 3, 4 x 3 = 12. That makes O = 2 with a carry of 1.
G = 4 x 2 + 1, or 9.

This gives:

23
x4
----
92

Check: 23 + 23 + 23 + 23 = 92

Verify this with a calculator.