Friday

December 19, 2014

December 19, 2014

Posted by **Katherine** on Friday, November 6, 2009 at 2:56pm.

- math -
**jake**, Friday, November 6, 2009 at 3:02pm96

- math -
**PsyDAG**, Saturday, November 7, 2009 at 11:05am96 is a nice number, but it is not the answer to your problem.

Let x = total number of pens

.5x = Monday sales, which means that .5x remain.

30 = Tuesday sales

1/3(.5x-30) = Wednesday sales

40 remained on Thursday

.5x - 30 - 1/3 (.5x -30) = 40

Solve for x.

I hope this helps. Thanks for asking.

**Answer this Question**

**Related Questions**

word problem(algebra) - a shopkeeper bought 16 boxes of pens.each box contained ...

math - A college bookstore ordered six boxes of red pens. The store sold 32 red ...

algebra - A college bookstore ordered six boxes of red pens. The store sold 37 ...

pre algebra - A college bookstore ordered 6 boxes of red pens. The store sold 32...

algebra - An office supply store sells pens for $3 and notebooks for $5. Before ...

math - a number of teachers were to receive 6 pens each ,but needed 4 more pens ...

MATH - MR CHEN WANTS TO BUY 27 BLUE PENS AND 35 RED PENS. THE PENS ARE SOLD IN ...

algebra - One day a store sold 45 pens, the zippedy do's at $8.50 & The Royal ...

math - jared bought a package of pens containing 20 pens. If 3/4 of the pens had...

math233 - a college bookstore order six boxes of red pens last week. and 70 red ...