Page 522 - Basic College Mathematics with Early Integers

CHAPTER 6 REVIEW 499

(6.2) Translate each to an equation and solve.

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43. 1250 is 1.25% of what number? 44. What number is 33 % of 24,000?
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45. 124.2 is what percent of 540? 46. 22.9 is 20% of what number?

47. What number is 40% of 7500? 48. 693 is what percent of 462?

(6.3) Translate each to a proportion and solve.
49. 104.5 is 25% of what number? 50. 16.5 is 5.5% of what number?

51. What number is 36% of 180? 52. 63 is what percent of 35?

53. 93.5 is what percent of 85? 54. What number is 33% of 500?

(6.4) Solve.

55. In a survey of 2000 people, it was found that 1320 56. Of the 12,360 freshmen entering County College,
have a microwave oven. Find the percent of people 2000 are enrolled in basic college mathematics. Find
who own microwaves. the percent of entering freshmen who are enrolled in
basic college mathematics. Round to the nearest
whole percent.

57. The number of violent crimes in a city decreased 58. The current charge for dumping waste in a local
from 675 to 534. Find the percent decrease. Round to landfill is $16 per cubic foot.To cover new environ-
the nearest tenth of a percent. mental costs, the charge will increase to $33 per cubic
foot. Find the percent increase.

59. This year the fund drive for a charity collected 60. A local union negotiated a new contract that
$215,000. Next year, a 4% decrease is expected. Find increases the hourly pay 15% over last year’s pay.
how much is expected to be collected in next year’s The old hourly rate was $11.50. Find the new hourly
drive. rate rounded to the nearest cent.

(6.5) Solve.

61. If the sales tax rate is 5.5%, what is the total amount 62. Find the sales tax paid on a $25.50 purchase if the
charged for a $250 coat? sales tax rate is 4.5%.

63. Russ James is a sales representative for a chemical 64. Carol Sell is a sales clerk in a clothing store. She
company and is paid a commission rate of 5% on all receives a commission of 7.5% on all sales. Find her
sales. Find his commission if he sold $100,000 worth commission for the week if her sales for the week
of chemicals last month. were $4005. Round to the nearest cent.