Math Workshop 4-27-20

Zhang Lei spent $20.00 during his last outing at the bowling alley. This included a one-time shoe rental fee of $3.50. He spent the rest of the money on bowling a number of games. If it took Zhang Lei 45 minutes to bowl each game and he spent 2 hours and 15 minutes bowling, how much did it cost per game?

• $3.00

• $5.50

• $6.67

• $7.34

Brett spent $35.00 during his trip to the movies. This included two popcorn purchases at $5.50 each. He spent the rest of the money paying for his friend’s tickets to the movies at $8 each. How many friends did Brett bring to the movies?

• 4 Friends

• 3 Friends

• 2 Friends

• 5 Friends

During a timed test, Alexander typed 742 words in 14 minutes. Assuming Alexander works at this rate for the next hour, which of the following best approximates the number of words he would type in that hour?

• 53

• 840

• 3,180

• 44,520

Jason collected 3,600 cans for a food drive in 30 days. Assuming Jason collects cans at the same rate, which of the following best approximates the number of cans he would collect over the next two weeks?

• 2,640

• 3,600

• 1,680

• 50,400

A company has the goal of doubling its revenue from 32 million dollars to 64 million dollars over the next 2 years. If the company increases its revenue by 50% in the first year, by approximately what percentage must the company increase its revenue in the second year in order to reach its goal?

• 25%

• 33%

• 50%

• 100%

During last year's basketball season, Jackson attempted 150 free throws of which he made 120. So far this season, he's attempted 24 and made 16. A player's free-throw percentage is defined to be the percent of free-throws made out of the number of free-throws attempted. Assuming calculations began with the start of last year's season, which of the following best approximates Jackson's overall free-throw percentage to date?

• 67%

• 73%

• 78%

• 80%

Elena is conducting a study about the effects of toxins in the water on the hormones of fish. Elena surveys 350 male fish in a river and finds that 150 of the male fish have egg cells growing inside them. According to Elena's survey, what is the ratio of male fish with egg cells to male fish without egg cells in the river?

• 3:4

• 3:7

• 4:5

• 4:7

The ratio of the amount of vitamin A in cow milk to the amount of vitamin A in goat milk is 3 to 4. If a liter of cow milk has 1560 international units (IU) of vitamin A, how many IU of vitamin A is in a liter of goat milk?

• 1,890

• 2,080

• 2,044

• 2,180

The National Research Council recommends keeping a 1 : 3 copper to zinc ratio in a horse's diet. If the horse is getting 420 milligrams (mg) of zinc per day, how many milligrams of copper does the Council recommend the horse have?

• 140

• 90

• 120

• 70

The rate of perceived exertion (RPE) scale runs from 0 to 20 and is approximately proportional to a person's heart rate. If an RPE rank of 20 corresponds to a person's maximum heart rate of 205 beats per minute (BPM), what RPE rank corresponds to the person's resting heart rate of 70 BPM? Round to the nearest integer.

• 5

• 12

• 10

• 7