If the price of the item drops by 60% then that means the new price is 40% of the original
new price = p*0.4
ex: 
new price = $100*0.4= $40
new price= $75*0.4 = $30
        
             
        
        
        
The answer is D $126,if three cost $54 that means one costs $18 and just multiply it with seven
        
                    
             
        
        
        
5 packs of stamps and 7 packs of envelopes. There will be a total of 70 envelopes and stamps.
        
             
        
        
        
16 x 3/8 so 16/1 x 3/8 = 48/8. 48 divided by 8 is 6. So 6 inches.
        
             
        
        
        
You would make a table first, the top part, just start from zero and add every time. Hope this helps