| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.79 |
| Score | 0% | 56% |
On average, the center for a basketball team hits 50% of his shots while a guard on the same team hits 55% of his shots. If the guard takes 15 shots during a game, how many shots will the center have to take to score as many points as the guard assuming each shot is worth the same number of points?
| 35 | |
| 16 | |
| 14 | |
| 17 |
guard shots made = shots taken x \( \frac{\text{% made}}{100} \) = 15 x \( \frac{55}{100} \) = \( \frac{55 x 15}{100} \) = \( \frac{825}{100} \) = 8 shots
The center makes 50% of his shots so he'll have to take:
shots made = shots taken x \( \frac{\text{% made}}{100} \)
shots taken = \( \frac{\text{shots taken}}{\frac{\text{% made}}{100}} \)
to make as many shots as the guard. Plugging in values for the center gives us:
center shots taken = \( \frac{8}{\frac{50}{100}} \) = 8 x \( \frac{100}{50} \) = \( \frac{8 x 100}{50} \) = \( \frac{800}{50} \) = 16 shots
to make the same number of shots as the guard and thus score the same number of points.
Monica scored 80% on her final exam. If each question was worth 2 points and there were 140 possible points on the exam, how many questions did Monica answer correctly?
| 56 | |
| 51 | |
| 48 | |
| 64 |
Monica scored 80% on the test meaning she earned 80% of the possible points on the test. There were 140 possible points on the test so she earned 140 x 0.8 = 112 points. Each question is worth 2 points so she got \( \frac{112}{2} \) = 56 questions right.
A sports card collection contains football, baseball, and basketball cards. If the ratio of football to baseball cards is 3 to 2 and the ratio of baseball to basketball cards is 3 to 1, what is the ratio of football to basketball cards?
| 1:4 | |
| 9:2 | |
| 7:1 | |
| 3:8 |
The ratio of football cards to baseball cards is 3:2 and the ratio of baseball cards to basketball cards is 3:1. To solve this problem, we need the baseball card side of each ratio to be equal so we need to rewrite the ratios in terms of a common number of baseball cards. (Think of this like finding the common denominator when adding fractions.) The ratio of football to baseball cards can also be written as 9:6 and the ratio of baseball cards to basketball cards as 6:2. So, the ratio of football cards to basketball cards is football:baseball, baseball:basketball or 9:6, 6:2 which reduces to 9:2.
What is \( \frac{3}{6} \) + \( \frac{8}{10} \)?
| 2 \( \frac{2}{30} \) | |
| 1 \( \frac{3}{30} \) | |
| 1\(\frac{3}{10}\) | |
| \( \frac{2}{30} \) |
To add these fractions, first find the lowest common multiple of their denominators. The first few multiples of 6 are [6, 12, 18, 24, 30, 36, 42, 48, 54, 60] and the first few multiples of 10 are [10, 20, 30, 40, 50, 60, 70, 80, 90]. The first few multiples they share are [30, 60, 90] making 30 the smallest multiple 6 and 10 share.
Next, convert the fractions so each denominator equals the lowest common multiple:
\( \frac{3 x 5}{6 x 5} \) + \( \frac{8 x 3}{10 x 3} \)
\( \frac{15}{30} \) + \( \frac{24}{30} \)
Now, because the fractions share a common denominator, you can add them:
\( \frac{15 + 24}{30} \) = \( \frac{39}{30} \) = 1\(\frac{3}{10}\)
Which of the following is not a prime number?
9 |
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7 |
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2 |
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5 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.