College of Marin Study Guide for Math 95 A,B - Pearson Learning ...

49 Study Guide for Math 95A, BCumulative Lesson: Sample Final for Math 95BThere are text references in front of each problem on this final. For example, [6.1]means Chapter 6, Section 1 of your textbook.[6.1] 1. a. Find decimal notation for 0.18%.0.18% 0.18 • 0.01 0.0018[6.1] 1. b. Find percent notation for 0.334.0.334 0.334 • 100% 33.4%5[6.2] 2. Find percent notation for -- .85-- • 100%8500--------% 62.5% or 62 1 28--%[6.2] 3. Find fractional notation for 16.6%.16.6% 16 2 3 --% 16 • 3 2 50 50 1 ------------------------ % -----% ----- • -------- 3 3 3 100[6.3] 4. $39 is what percent of $50?Let x the number in percent.3939 x% • 50; 39 x 0.01 • 50; 39 0.50 x; x --------- 78; 78%0.50[6.3] 5. 70% of what is 14?Let x the number.1470% • x 14; 0.70 • x 14; x --------- 20; 200.70[6.4] 6. What is 76% of 90? (Use a proportion.)76--------100Let x the number.x -----; 76 • 90 100 • x; 6840 100x; x 68.4; 68.490[6.5] 7. A mix consists of three products a, b, and c. There is 1800 lb of product a,1500 lb of product b, and 700 lb of product c. What percent is product c?We need to solve “700 is what percent of (1800 1 1500 1 700)?”.Let x the percent of the total mix that is product c.1--6700 x% • 4000; 700 x • 0.01 • 4000; 700 40x; x700--------4035-----; 17 1 22--%