**math jokes 4 mathy folks**

live. laugh. learn.

:: Problems

**7-11 Problem**

A woman walks into a 7-11 and takes four items to the cash register. The clerk informs
her that the register is broken, but he can figure the total using his calculator. The
clerk then proceeds to **multiply** the prices together and declares that the total
is $7.11. Although the woman knows the prices should have been **added**, not
multiplied, she says nothing — as it turns out, the result would have been $7.11 whether the four prices
were added or multiplied.

There was no sales tax. What was the cost of each item?

A simpler version of this problem, which can be solved with a system of linear equations, employs the following modifications:

- There are
**two**items instead of four. - The total cost is
**$8.41**, not $7.11.