Math question help please

Aug 20th, 2015
DotaCN
Category:
Mathematics
Price: $10 USD

Question description

1. John buys 100 shares of stock at $100 per share. The price goes up by 10% and he sells 50 shares. Then, prices drop by 10% and he sells his remaining 50 shares. How much did he get for the last 50?

  1. $5000
  2. $5500
  3. $4900
  4. $5050
  5. $4950

2. A teacher has 3 hours to grade all the papers submitted by the 35 students in her class. She gets through the first 5 papers in 30 minutes. How much faster does she have to work to grade the remaining papers in the allotted time?

  1. 10%
  2. 15%
  3. 20%
  4. 25%
  5. 30%

3. A satellite in a circular orbit rotates around the Earth every 120 minutes. If the Earth's radius is 4000 miles at sea level, and the satellite's orbit is 400 miles above sea level, approximately what distance does the satellite travel in 40 minutes?

  1. 1400 miles
  2. 9210 miles
  3. 4400 miles
  4. 4120 miles
  5. 8000 miles

4. What is the next-highest prime number after 67?

  1. 68
  2. 69
  3. 71
  4. 73
  5. 76

5. How many 3-inch segments can a 4.5-yard line be divided into?

  1. 15
  2. 45
  3. 54
  4. 64
  5. 84

6. Sheila, Janice, and Karen, working together at the same rate, can complete a job in 3 1/3 days. Working at the same rate, how much of the job could Janice and Karen do in one day?

  1. 1/5
  2. 1/4
  3. 1/3
  4. 1/9
  5. 1/8

7. A box of laundry detergent contains 16.5 oz of product. What is the maximum number of loads that can be washed if each load requires a minimum of 3/4 oz of detergent?

  1. 10
  2. 50
  3. 22
  4. 18
  5. 16.5

8. A blouse normally sells for $138, but is on sale for 25% off. What is the cost of the blouse?

  1. $67
  2. $103.50
  3. $34.50
  4. $113
  5. $125

9. A crane raises one end of a 3300 lb steel beam. The other end rests upon the ground. If the crane supports 30% of the beam's weight, how many pounds does it support?

  1. 330 lbs
  2. 990 lbs
  3. 700 lbs
  4. 1100 lbs
  5. 2310 lbs

10. A taxi service charges $5.50 for the first 1/5th of a mile, $1.50 for each additional 1/5th of a mile, and 20 cents per minute of waiting time. Joan took a cab from her place to a flower shop 8 miles away, where she bought a bouquet, then another 3.6 miles to her mother's place. The driver had to wait 9 minutes while she bought the bouquet. What was the fare?

  1. $20
  2. $120.20
  3. $92.80
  4. $91
  5. $90

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(Top Tutor) Daniel C.
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