287•6 actually equals 1722... i dont know if this helps
The sum of the inside angles of a triangle, always sum up to 180 degrees. Using this information, we can create the following equation for this problem:

Adding up all terms with 'x' and adding the other together, we have the following equation:

Solving this last equation for 'x', we have the following:

Then, the final answer for the 'x' value is twelve!
The percentage discount on the item will be equal to 8%.
<h3>What is the percentage?</h3>
The Percentage is defined as representing any number with respect to the 100. It is denoted by the sign %.
Given that:-
- Price of the item before tax and discount = $17
- After discount and before tax price is = $15.64
The percentage of the discount will be calculated as:-
Percentage discount = ( 17 - 16.64 ) / ( 17 )
Percentage discount= ( 1.36 ) / ( 17 )
Percentage discount = 0.08 x 100 = 8%
Therefore the percentage discount on the item will be equal to 8%.
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0.1 liters = 100 milliliters