560/20 = 28 teachers currently.
560/16 = 35 teachers needed for 16:1 ratio. So how many new teachers must be hired?
In a school with 560 students, the ratio of students to teacher is 20 to 1. How many new teachers need to be hired to reduce the ratio to 16 to 1?
3 answers
7 teachers need to be hired> Thank you :)
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