Explanation for Question 14 From the Math (Calc) Section on the 2019 April Sat
In number 14, we want to know the total distance that Shayla spent walking 2 and running in kilometers instead of miles. 3 So we are going to use this unit conversion in the parentheses that it 4 gives us and convert our original four miles into 5 kilometers. So to do that, 6 I'll write my four miles over one. 7 And then now we can see how we need to set up our equation. 8 So we need to have miles in the bottom and kilometers on the top 9 so that the two miles will cancel out with each other. 10 So we have one mile is equal to 1.6, 11 one kilometers. So now we can see our miles will cancel 12 out and leave us with kilometers. So we have to do four times 13 1.61 to get our answer. 14 And that will give you 6.4, 15 four kilometers.