Take 87-63 = 24, which is the difference of the 2 hours. Divide this by two to get the hourly rate, which is $12.
We can now set up the equation as follows:
4(12) + x = 63
6(12) + x = 87
Now solve for each:
4(12) + x =63
48 + x = 63
x = $15
6(12) + x = $87
72 + x = 87
x = $15
Therefore, the Flat Fee = $15 and the Hourly rate = $12
You can do Guess and Check(but the smart way). You first get 102 and 12. Then, you can minus 3 from each one of them, getting 99 and 9, also being 11 times the other, so then the answer would be 180 - 99 or 90 - 9, equaling 81
That would be 1.175 Answer
Hello from MrBillDoesMath!
Answer:
Choice C, 14
Discussion:
The question is a bit obtuse bust as I understand it if we take x = 14 (Choice C). determined by trial and error, then
sqrt(91x) =
sqrt ( 91 * 14) =
sqrt (1274 ) =
sqrt (49 *26) = => as sqrt(49) = 7 we can simplify the expression
= 7 sqrt(26)
Thank you,
MrB
