New SAT Math Workbook

At how many revolutions per minute is the second gear

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Unformatted text preview: minute and is meshed with another gear having 25 teeth. At how many revolutions per minute is the second gear turning? (A) 35 (B) (C) (D) (E) 7. 1 2 1 22 2 DIAGNOSTIC TEST Directions: Work out each problem. Circle the letter that appears before your answer. Answers are at the end of the chapter. = Solve for x: 3 4 (A) 2 (B) 3 (C) 4 2x x+5 1. (D) (E) 2. 4 2 5 a–3 b+2 = x 4c 1 Solve for x if a = 7, b = 8, c = 5: (A) 4 (B) 5 (C) 6 (D) 7 (E) 8 6. 3. A map is drawn using a scale of 2 inches = 25 miles. How far apart in miles are two cities which are 5 (A) (B) (C) (D) (E) 60 65 67 2 69 70 1 37 2 inches apart on the map? 5 30 24 4. How many apples can be bought for c cents if n apples cost d cents? (A) (B) (C) (D) (E) nc d nd c cd n d c A boy weighing 90 pounds sits 3 feet from the fulcrum of a seesaw. His younger brother weighs 50 pounds. How far on the other side of the fulcrum should he sit to balance the seesaw? (A) (B) (C) (D) (E) 3 4 2 5 5 2 1 3 1 1 3 1 4 2 5 ft. ft. ft. ft. ft. nc 53 54 Chapter 4 8. Alan has enough dog food to last his two dogs for three weeks. If a neighbor asks him to feed her dog as well, how long will the dog food last, assuming that all three dogs eat the same amount? (A) 10 days (B) 12 days (C) 14 days (D) 16 days (E) 18 days A newspaper can be printed by m machines in h hours. If 2 of the machines are not working, how many hours will it take to print the paper? (A) (B) (C) (D) (E) mh - 2h m m-2 mh mh + 2h m mh m-2 mh m+2 10. An army platoon has enough rations to last 20 men for 6 days. If 4 more men join the group, for how many fewer days will the rations last? (A) 5 (B) 2 (C) 1 (D) 1.8 (E) 4 9. Variation 55 1. RATIO AND PROPORTION A ratio is a comparison between two quantities. In making this comparison, both quantities must be expressed in terms of the same units. Example: Express the ratio of 1 hour to 1 day. Solution: A day contains 24 hours. The ratio is Example: Find the ratio of the shaded portion to the unshaded portion. 1 , whic...
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This note was uploaded on 08/15/2010 for the course MATH a4d4 taught by Professor Colon during the Spring '10 term at Embry-Riddle FL/AZ.

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