Ratios & averages
Use equal parts and totals to find the exact answer.
Four ratio questions and four average questions
Scale ratios and find missing values
Eight questions. No time limit.
- Questions answered
- 0 / 8
- Active time
- 0:00
Follow the parts and totals
Read which amount is known and which is missing. Ratios keep the same order; group averages depend on how many values each group contains.
Ratio 2:3, total 20. There are 5 equal parts, so the first amount is 8.
One way to solve it
- Correct answers
- 0 / 8
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How to play
Choose one of four answers. The answer locks when selected. Read the method, then choose Next question.
In a ratio, each part has the same value. For an average, recover the total first. When groups have different sizes, weight each mean by its count.
Choose an exact answer. A fraction is a value, not a request to round. In each ratio A:B, A always refers to the first amount.
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