Official Act Math Thread June 2013

<p>Yes I also got 12.5</p>

<p>@student
No, the answer was not 1. It was 8. (4/3)*6 = 8. Why is it multiplied by 6? Because the question asked for you to divide by (1/6), which is functionally multiplying by 6.</p>

<p>I think so, all you had to was multiple numbers and ended up being 2/9</p>

<p>Nope. The answer was 8. </p>

<p>If you have a set numbers of (2, 5, 8, 10) and you’re first multiplying it by 4/3, what do you get?</p>

<p>(8/3, 20/3, 32/3, 40/3) Fair enough?</p>

<p>Now the question asked for DIVIDING BY 1/6 which is technically multiplying by 6. Dividing by 1/6 is asking how many 1/6 can go into a number? Think of it like this - how many halves (1/2) are in 3 full cookies? 6, obviously. You can get 6 also by multiplying the cookies by the reciprocal of 1/2. </p>

<p>So when we divide by 1/6, we are multiplying by 6</p>

<p>8/3, 20/3, 32/3, 40/3 -> 48/3, 120/3, 192/3, 240/3</p>

<p>or 16, 40, 64, 80. </p>

<p>Starting from 2, 5, 8, 10, we can clearly see that we can just multiply by 8.</p>

<p>The one where you had to multiply a number by 4/3 and then divide it by 1/6… the answer is 8.</p>

<p>What question does the 12.5 answer go to?</p>

<p>Looking up, it’s the one where they length is 5 more than the width. The rectangle one</p>

<p>Do you remember the other numbers?</p>

<p>@imadropout thanks, I thought I might have misread when that one guy said perimeter was 32</p>

<p>anyone remember the one with cos of A is the same to what of B? Were the variables numbers or letters? I just put sin of B but don’t know if its wrong.</p>

<p>If I remember correctly, Cos A was equal to Sin B.</p>

<p>Oh heck yes I also put that^</p>

<p>^ that’s correct</p>

<p>For the problem that asked about the 4/3 being divided by 6, the answer was 2/9. I clearly remember reading that problem 3 times just to make sure I didn’t read it wrong. The problem never stated that it was being divided by 1/6. It said a number multiplied by 4/3 is divided by 6, not 1/6. I don’t know where you guys got the 1/6 from…</p>

<p>You remembered it wrong. It was 4/3 divided by 1/6.</p>

<p>The answer to that was 8.</p>

<p>Answer was 8. It was 4/3 divided by 1/6</p>

<p>i also remember 6 what forms did you guys have?</p>

<p>I don’t remember if it was multiplied by 6 or divided by 1/6 (which would be the same thing), but I know that the answer was 8.</p>

<p>Nope it was divided by 1/6. I PROMISE lol. I read it over like 20 times just to make sure I wasn’t doing it wrong. </p>

<p>Either way, the only way you can get 8 is if it was 1/6…
It’s a trick question by the ACT. The common mistake is to just divide by 6 because people who read divide by 1/6 think “oh im just dividing by 6”</p>

<p>So the answer was 8. That’s what most of us decided, right?</p>