[Video] Q2: Two units of length used in ancient egypt were cubits and palms, where 1 cubit is equivalent to 7 palms. the great sphinx statue in giza is approximately 140 cubits long. which of the following best approximates the length, in palms, of the great sphinx statue?

Explanation for Question 2 From the Math (Calc) Section on the Official Sat Practice Test 9

Question two asks us two units of length use in ancient Egypt were cubits 2 and poems or one cubit is equivalent to seven poems. 3 The greats thinks statue in Giza is approximately 140 cubits long, 4 which of the following best approximates the length in poems of the great things 5 statue. Okay. 6 So this is a word problem and how we're going to want to solve 7 this one is by setting up a ratio. 8 So we know that one cubit is equivalent to 9 seven poems. We can also write out as a fraction. 10 So we know that one cubit is 11 equal to seven poems, and we're 12 told that the statue is 140 cubits long, 13 and we're trying to determine the length in poems. 14 So let's set up a ratio. 15 So one cubit over seven poems is equal to 140 16 cubits over X poems. 17 So we're solving for X poems. The thing to note is that you always 18 want the units to be the same on the top and on the bottom. 19 So that Cuban ends up with the cubit and poems winds up with poems. 20 Now we can solve this by cross multiplying. 21 So we have one times X, X is equal to 140 22 times seven. So that is going to be 980. 23 So we get the X is equal to 980 poems. 24 We can select D as our answer.