When solving SAT percent problems where you know the percentage and the part (e.g., 80% of items are faulty and there are 88 faulty items), you must divide the part by the percentage (as a decimal) to find the total, not multiply. For example, 88 ÷ 0.8 = 110 total items.
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SAT percent question that tricks most students..Added:
This easy SAT question tricks most students. In the sample, 80% of items are faulty. There's 88 faulty items. How many total items are in the sample? Can you solve it? Jackpot, this is D easy.
So, maybe just multiply 80% * 88. That's 70.4, which is close to A.
Wait, crap. It says 80% of the total items are faulty. So, 80% of, which means multiply, the total items would give us the number of faulty items. And 88 [music] is the number of faulty items. Bingo. Now we just got to find the number of total items. So, let's call that X. And 80% [music] is just.8.
So, to get X all alone, we got to divide both sides by.8. [music] So, X = 88 /.8, which is 110. It's D.
Want more SAT hacks? [music] Click the video below.
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