Monday, November 13, 2006

Not quite so simple math

Each letter represents a different digit:

A+B=C and C+D=EA

What is the value of B+D? Numerically, I mean.

7 comments:

Lucy said...

Um. What?

A+B=C C+D=EA

2+4=6 6+8=(7)(2)

4+8=12.

But this is clearly wrong, because it says this isn't simple math. And what is shown above is simple math.

Dad said...

Lucy, EA is not E*A. It's a two digit number. It wasn't very clear.

And it's not that it isn't simple, it just isn't quite so simple.

Try again.

Luke Murphy said...

B+D=10.

C=A+B C+D=A+B+D

A+B+D=EA
B+D=EA-A

EA-A=10

EA has to be at least 10 and less than 20 because it is the sum of two single digit numbers. So then say if A is 2, then 12-2=10, or if A is 5, 15-5=10, etc.

Caleb said...

I'm sorry, I don't understand. Maybe if I knew what portion of B+D resembles PacMan, I could figure it out.

Mom said...

Is this right?

A + B = C
2 + 6 = 8

C + D = EA
8 + 4 = 12

Dad said...

Um, well, read the problem again. What is the question that is being asked?

It always helps to try and answer the question that is being asked.

Mom said...

Oh, I see. Duh.

So Luke's answer is "the" answer. I got sidetracked by the cryptogram aspect of it.