Big Lots is having a sale. All chairs are 25% off. If you buy more than 5 chairs, you get an additional 1/3 off the discounted price of the number of chairs over 5. If you bought 8 chairs that were normally priced at $20, how much do the chairs cost in total?
You save $5 per chair with the 25% off sale.
On sale chairs cost $15 each because 20 - 5 = 
<gadget id="calculator">20-5</gadget>
<output>15</output>
15.
You bought 3 chairs above the 5 required before the extra savings starts because 8 - 5 = 
<gadget id="calculator">8-5</gadget>
<output>3</output>
3.
You save an extra $5 on these chairs because 15 x (1/3) = 
<gadget id="calculator">15*(1/3)</gadget>
<output>5</output>
5.
The first five chairs cost $75 in total because 5 x 15 = 
<gadget id="calculator">5*15</gadget>
<output>75</output>
75.
The final three chairs cost $30 in total because 3 x 10 = 
<gadget id="calculator">3*10</gadget>
<output>30</output>
30.
In total they cost $105 because 75 + 30 = 
<gadget id="calculator">75+30</gadget>
<output>105</output>
105.

<result>105</result>