Explanation for Question 31 From the Math (Calc) Section on the Official Sat Practice Test 1
No question 31. We're told that why can husk at least 12 dozen ears 2 of corn per hour and at most eight dozen ears of corn per hour? 3 Right? So in one hour, he'll husked between 12 and 18 years 4 of corn. And it says, based on this information, 5 what is a possible amount of time and hours that would take Wyatt to 6 husk 72? 7 Right? So what we're really going to do here is we're going to compare 8 the slowest that Ryan can work or why it can work with the 12,000 9 per hour. And we're going to compare that to the highest that he could 10 work, which is the eight dozen. So first let's talk about slow. 11 If he's slow, he can do 12 years per hour. 12 And if he wants to do 72 years, 13 right, then we can think about doing 72 divided by 12 to see the, 14 it will take him six hours, six hours at his slowest. 15 So that's the maximum amount of time that would take him. 16 Right? And then if we think about him going as fast 17 as he can, that's 18 years per hour, 18 and then we can do 72 divided by 18. 19 Why don't we do that? We get four right. Four hours. 20 So it could take him anywhere from four to six hours, 21 um, to husk all these ears of corn. 22 Right? And so it's asking us what is a possible amount of time. 23 So some possible answers include four and six and then anything 24 in between. So on your answer can, you'll see four to six inclusive, 25 four to six inclusive, just meaning that four and six are also possible answers.