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36 w x 48 hr = 1728 worker hours to complete the job

1728 w h /24 w = 72 hrs for only 24 workers 

$55\% \text{ off means you pay }(100\%-55\%) = 45\%\\ 45\% \text{ of }\$65 = (0.45)65 = \$29.25$

EP i think you are assuming that this is a regular octagon which it may well not be.

Just in case you are unsure :

density =  mass/volume     

9 x 10 = 90    divisible by  15

99 x 100 = 9900    divisible by 4 and 15

999 x 1000 = 999 000  divisible by 4 and 15      see a pattern here?

B:  2400 cents /80 cents/magnet  = 30 magnets     2400/120 = 20 magnets      

          4800 total / (30 + 20 magnets) = 96 cents/magnet

Instead of bashing, we can use the formula: $\frac{n(n+1)}{2}$ , so  $\frac{9*10}{2}=9*5=\boxed{45}.$

Nobody else can, though!

Sure, why not?

1+2+3+4+5+6+7+8+9 = 45!

density = mass/volume

$d=\frac{m}{V}$, density=d, m=mass, and V=volume.

density=mass divided by volume

Hint: Try to set up an equation.

Solution: To start off, we have $9x-26=5x+26.$ $4x=52, x=13$ and plug it back at $5x$ to get your answer.

Should be $13*5=\boxed{65}.$

I have always enjoyed mathematics recreationally.

Many people do.  

It means an exponent follows

It means that a number has an exponet

for example - 2^2 = 2²

^ is referring to an exponent! It means an exponent follows a number, for instance, 576^2 means 576 to the power of 2 or 576²

If you know my grammar is messed up, why don't you know what 1+1 is and 1*1 is?

Math 'Poll'