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The present ratio of students to teachers at a certain school is 30 to 1. If the number of students were to increase by 50 and that of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?

The present ratio of students to teachers at a certain school is 30 to 1. If the number of students were to increase by 50 and that of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers? Correct Answer 15

Let, The numbers of student are 30x & teachers are xATQ 30x + 50/x + 5 = 25    x = 15So, the number of teachers are 15.

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