New SAT Math Workbook

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Unformatted text preview: r 17 Section 2 25 Questions Time: 30 Minutes Directions: Solve each of the following problems. Write the answer in the corresponding grid on the answer sheet and fill in the ovals beneath each answer you write. Here are some examples. Answer: 3/4 (–.75; show answer either way) Answer : 325 Note: A mixed number such as 3 1/2 must be gridded as 7/2 or as 3.5. If gridded as “3 1/2,” it will be read as “thirty–one halves.” Note: Either position is correct. 1. 2. 3. If 8 3 3 of is added to , what is the result? 8 8 8 6. If 2n–3 = 32 what is the value of n? In a group of 40 students, 25 applied to Columbia and 30 applied to Cornell. If 3 students applied to neither Columbia nor Cornell, how many students applied to both schools? If x2 – y2 = 100 and x – y = 20, what is the value of x + y? A gallon of water is added to 6 quarts of a solution that is 50% acid. What percent of the new solution is acid? full. After adding 10 A gasoline tank is 4 gallons of gasoline, the gauge indicates that the 2 tank is full. Find the capacity of the tank in 3 gallons. If (x – y)2 = 40 and x2 + y2 = 60, what is the value of xy? If 2.5 cm = 1 in. and 36 in. = 1 yd., how many centimeters are in 1 yard? How much more is 1 1 1 1 of than of ? 4 3 3 4 1 7. 8. 9. 4. 5. 10. If the average of 5 consecutive even integers is 82, what is the largest of these integers? www.petersons.com Practice Tests 333 SOLUTIONS TO PRACTICE TESTS PRACTICE TEST A Section 1 1. (B) 1 x =8 5 x = 40 1 (40) = 10 4 9. (A) 80% = 4 5 4 ⋅ 45 = 36 5 1 ⋅ 45 = 15 3 Used in October = 36 – 15 = 21 10. (E) Angle AOD = 50º 2. (E) Multiples of 3 are 3 apart x is 3 below x + 3. x + 6 is 3 above x + 3. 6x + 18 = 6(x + 3), 2x + 6 = 2(x + 3). 3x + 5 does not have a factor of 3, nor can it be shown to differ front x + 3 by a multiple of 3. (C) Angle C = 40º (Congruent angles.) Angle COB = 50º Arc CB = 50º Angle CAB is an inscribed angle = 25º 11. (B) abcd ⋅ ⋅ ⋅ ⋅x =1 bcde a ⋅x =1 e e x= a 3. Angle BAC = 100º (S...
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