[Video] Q3: The formula below is often used by project managers to compute e, the estimated time to complete a job, where o is the shortest completion time, p is the longest completion time, and m is the most likely completion time. e = o + 4m + p / 6 which of the following correctly gives p in terms of e, o, and m ?

Explanation for Question 3 From the Math (No Calc) Section on the Official Sat Practice Test 8

So question number three has given us a nice fraction and nice equation here. 2 And it's asking us, which of the following gives P in terms of E 3 O N N. And so you may be familiar with the wording of what 4 this question is saying, right? Because they say, which of the following correctly gives 5 P first off, when they say give P they simply mean solve 6 for P and we can see this in the answer choices too, 7 right? Because all of our answer choices have P equal to something. 8 So essentially we're just solving for P and then the second part that could 9 be confusing is where it says in terms of E L and M. 10 This simply means that these are the variables that you're allowed to use. 11 So that means that, you know, 12 if there was another variable, for example, X in here, 13 you wouldn't be allowed to use X in your equation because it doesn't tell 14 you to use X, but in this case, 15 you're allowed to use all the variables that are in your equation. 16 And so you don't really have to pay attention to the part where it 17 says, in terms of this isn't really important here. 18 And so all we have to do is take this equation where E equals, 19 oh, plus four M plus P over six and solve 20 it for our variable. P is step one is always to get rid of 21 the fraction, right? And the fracture that we have here is divided by six. 22 So what I can do is I can take both sides and I can 23 multiply them by six so that these sixes will cancel. 24 And that'll leave me with six E is equal to ...