7. Allie Kat weighs 90 pounds and is sitting on a seesaw 120 inches from the middle. Don Key weighs 150 pounds. How far from the middle must Don sit in order to balance the seesaw?
25. P, Q, and R are positive integers. If P+(1/(Q+(1/R)))= 25/19, then find P+Q+R.
42. The vector (2, -6) is parallel to which of the following vectors?
(A) (8, -1.5) (B) (-7, 21) (C) (1, -3) (D) (-1, 12) (E) (-6, -18)
46. Sal Tee makes a solution that is 12% salt by combining 2 ounces of a solution that is 15% salt with 1 ounce of a solution containing an unknown amount of salt. What is the percentage of salt in the 1 ounce solution?
Also, can anyone upload the answer keys for number sense, calculator, math, and science? Or send them to me by e-mail or AIM?