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Unformatted text preview: C) 67 ×.42 1 34 26 80 28.14 3. (A)
20 2 1 16 % = 3 6 4. 1 ⋅ 120 = 20 6 1 % = .2% = .002 (C) 5 40 × .002 .0800 5. (B)
r 100 r rs ⋅s = 100 100 r% = www.petersons.com 84 Chapter 5 Exercise 3
1. (C) 72 = .12x 7200 = 12x x = 600 80 =
1 x 8 Exercise 5
1. (A) 36 = 1 x 36 =
3 x 2 1 2 2. (D) 640 = x 3. (A)
3 x = 27 8 72 = 3x x = 24 2. (D) 300% = 3 6 · 3 = 18 (B) (A)
120 4 1 = = 133 % 3 90 3 3x = 216 x = 72 4. (E) m=
p ·x 100 3. 4. 100m = px
100 m =x p 500 = 2x 250 = x 5. (C) 137.5% = 1.375 5. (D) 1 x=r 2 x = 2r Retest
1. (C) (D) (E) .25% = 100 = 10, 000 = 400
3 % = .75% = .0075 4 .25 25 1 Exercise 4 4 15 1. (C) = ⋅ 100 = 5% 80 20 2. (B) 1 of 6 =3 2 1 of 60 = 15 4 31 = = 20% 15 5
3. (E) 2. 3. 12% = .12 .12 · 80 = 9.6 18 = .20x 90 = x
b 100 4. (B) Divide by .20. 5. 6. (A) b% = (B) b 100
50 ⋅6 = 3 3b 50 12 1 1 = = 12 % 96 8 2 48 = 1 = 100% 48
x 100 x y 4. (C) 1 5 62 % = 2 8 5 m = x Multiply by 8. 8 8m = 5 x Divide by 5. 8m =x 5 5. (D) y ⋅ 100 = 7. 8. (C) 21 2 = = 16 % 12 6 3 (E) 140% = 1.40 1.40 · 70 = 98 (C) 280% =
280 28 14 = = 100 10 5 9. 10. (A) 16 4 1 = = 133 % 12 3 3 www.petersons.com Verbal Problems Involving Percent 6
4. A baseball team won 50 of the first 92 games played in a season. If the season consists of 152 games, how many more games must the team 1 win to finish the season winning 62 % of 2 games played? (A) (B) (C) (D) (E) 5. 37 45 40 95 19 DIAGNOSTIC TEST
Directions: Work out each problem. Circle the letter that appears before your answer. Answers are at the end of the chapter. 1. A book dealer bought 100 books for $1250. If she sold 30% of these at $10 each and the rest at $15 each, what was her total profit? (A) $350 (B) $1350 (C) $300 (D) $1050 (E) $100 The Fishman family income for one month is $2000. If 25% is spent for lodging, 35% for food, 5% for clothing, and 10% for savings, how many dollars are left for other expenses? (A) $1500 (B) $400 (C) $500 (D) $1600 (E) $600 The enrollment of Kennedy High School dropped from 1200 to 1000 over a threeyear period. What was the percent of decrease during this time? (A) (B) (C) (D) (E) 20
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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 EmbryRiddle FL/AZ.
 Spring '10
 Colon
 SAT

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