If the ratio of teachers to students is 2:7 and there are 28 students, how many teachers are there?

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Prepare for the Jamaica Training Aid Test with our comprehensive quiz. Use flashcards and multiple-choice questions to enhance your learning. Ensure success with detailed explanations and hints.

Multiple Choice

If the ratio of teachers to students is 2:7 and there are 28 students, how many teachers are there?

Explanation:
Ratios tell you how many of one quantity there are for a fixed amount of the other. Here, for every 7 students there are 2 teachers. Since there are 28 students, that’s four groups of 7. Each group has 2 teachers, so 4 × 2 equals 8 teachers. There are eight teachers. (If you check, eight teachers would pair with 28 students in this ratio, while other numbers would pair with different numbers of students.)

Ratios tell you how many of one quantity there are for a fixed amount of the other. Here, for every 7 students there are 2 teachers. Since there are 28 students, that’s four groups of 7. Each group has 2 teachers, so 4 × 2 equals 8 teachers. There are eight teachers. (If you check, eight teachers would pair with 28 students in this ratio, while other numbers would pair with different numbers of students.)

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