22 quarters= $5.50
10 dimes= $1.00
$5.50 + $1.00 = $6.50 
I just did trial and error. I started with 20 quarters and made changes until it worked. 
        
             
        
        
        
<span>Step 1: 0.06 = 6⁄100</span> 
<span>Step 2: Simplify 6⁄100 = 3⁄50</span><span> 
hope this helps:)
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Answer:420
Step-by-step explanation x=90/0.375