Question

$105 skateboard; 7 1/2% tax

Answer 1

The total will be 183.75.

So 7&1/2 and equal to 7.5%  And when it is a percentage, you move the decimal two places to the right.  So it would be 0.75%.

Therefore, we time 0.75 and 105 together to see how much is the tax. 
0.75*105 =78.75 

Then we add 105 and 78,75 together to get the totally amount pay. 
105 + 78.75 = 183.75

So the total is 183.35.

Or you can do it like this:
105* 1.75 = 183.75 

The answer is the same but the second is just faster.