Astereo that cost $500 and sold for $750 in profit percentage

150% profit

Step-by-step explanation:

100% is still there, and the remaining 250 is half of that, meaning that in you head you can quickly deduce that there is a 150% profit form the resell.

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.