Given the ratio 3 : 5 : 7:
Calculate the
expected number of items from a population of 7
Ratio Definition
3 : 5 : 7 means that for every
Therefore, our total group is 3 + 5 = 15
Calculate Expected Number of Item A:
| Expected Number of Item A = | 3 x 7 |
| 15 |
| Expected Number of Item A = | 21 |
| 15 |
| Expected Number of Item A = | 7 |
| 5 |
Expected Number of Item A in Decimal form = 1.4
Calculate Expected Number of Item B:
| Expected Number of Item B = | 5 x 7 |
| 15 |
| Expected Number of Item B = | 35 |
| 15 |
| Expected Number of Item B = | 7 |
| 3 |
Expected Number of Item B in Decimal form = 2.3333333333333
Calculate Expected Number of Item C:
| Expected Number of Item C = | 7 x 7 |
| 15 |
| Expected Number of Item C = | 49 |
| 15 |
Final Answer
Expected Number of Item A = 1.4
Expected Number of Item B = 2.3333333333333
Expected Number of Item C = 0
Expected Number of Item B = 2.3333333333333
Expected Number of Item C = 0
Common Core State Standards In This Lesson
6.RP.A.1, 6.RP.A.2, 6.RP.A.3, 6.RP.A.3.D
How does the Ratios Calculator work?
Free Ratios Calculator - * Simplifies a ratio of a:b
* Given a ratio in the form a:b or a to b, and a total population amount, this calculator will determine the expected value of A and B from the ratio.
This calculator has 3 inputs.
* Given a ratio in the form a:b or a to b, and a total population amount, this calculator will determine the expected value of A and B from the ratio.
This calculator has 3 inputs.
What 1 formula is used for the Ratios Calculator?
a:b = a/b
What 6 concepts are covered in the Ratios Calculator?
- denominator
- The bottom portion of a fraction. For a/b, b is the denominator
- fraction
- how many parts of a certain size exist
a/b where a is the numerator and b is the denominator - greatest common factor
- largest positive integer dividing a set of integers
- numerator
- the number above the line in a common fraction
- ratio
- indicates how many times one number contains another
- ratios
