College Entrance Test Review Math Session 5 Word Problems on Integers, Fractions, Rational Exponents, Motion, Mixture, Money, Geometry

1. WORD PROBLEMS TIU College Entrance Test Review Math Session 5

3. Method 2: PRB triangle

4. Method 3: By Algebra

8. Just getting the cube root.

12. Let t = number of hours until they meet = time Ross traveled = time Rachel Diagram Ross, 40kph Rachel, 35 kph 150 km We use the formula, distance = rate x time

13. p. 87 Ex. 29 MIXTURE How much water must be added to 100 L of denatured alcohol 90% pure to dilute into 75% alcohol content? 100 L 90 % X 0% 100 + X 75%

15. Money P65,000 6% Interest at 4.5% = 4.5%x Interest at 6% = 6% (65,000 – x) Let x = money invested at 4.5% Equation?

19. GEOMETRY Example (Not in the book) An architect is to design a swimming pool in a hotel, to be fenced off on 3 sides with 60 meters of material. The pool is to have an area of 352 sq.m. What should the dimensions of the pool be? L W

21. Can we isolate the variable W above? The equation above is NOT linear. It is A QUADRATIC equation. (Degree of x is 2) How can we solve for W?

23. Factoring