# White Board Markers

Pro Problems > Math > Algebra > Equations > Word Problems > Linear## White Board Markers

I have a problem with dry erase markers disappearing from my classroom. A third of my markers were stolen by a student, and then one of my co-workers "borrowed" four markers. After that I realized that half of the remaining markers didn't work, so I threw them away.

In the end, I just had two markers left.

How many did I start with?

## Solution

In order to make it feasible for teachers to use these problems in their classwork, no solutions are publicly visible, so students cannot simply look up the answers. If you would like to view the solutions to these problems, you must have a Virtual Classroom subscription.## Similar Problems

### Adding It Up

The sum of a number and five more than that number is 47. What is the number?

### Snake in the Grass

Two snakes started out the same length. The first snake grew five inches, and the second grew by half its own length. If the first snake is now two inches shorter than the second snake, what was the original length of the two snakes?

### Next Year

Next year, Martha will be three times as old as she was 17 years ago. How old is Martha now?

### Square of a Sum

The sum of the squares of two positive numbers is 96 less than the square of the sum of the two numbers. If one number is two more than the other, what are the two numbers?

### Arithmetic Operation Word Problem

If 12 more than a number is added to the number, and three times the number is subtracted, the result is the original number. What is the original number?

### Moving Christmas

Hermie doesn't want to celebrate Christmas on December 25th, so he suggested moving it to a date *n* days later. Rudolph protested that then Christmas wouldn't happen as often.

Frosty then suggested that the date could be moved *n *days in the other direction. If Frosty's suggestion was followed, on what day would Christmas fall?

### Giant Roller Coaster

An amusement park has an enormous roller coaster with 48 roller coaster cars, each of which was carrying the same number of people. Six of the cars were removed from the coaster, and each of the remaining cars had to carry one extra person. How many people were there on the roller coaster?

### Single variable equation

A number, plus 5 more than that number, plus twice the sum of 5 and that number, is 43. What is the number?

### Find the Number

The sum of a number and twice that number is 20% more than the result would have been if the number had been increased by 12 and then doubled. What is the number?

### Three Numbers

I have a sheet of paper with three integers written on it. If I add them together, I have a sum of 38.

Two of the numbers differ by one. One of the three numbers is 11.

What is the largest possible integer that could be written on the paper?