leo4687
18.03.2021 •
Mathematics
In a fifth-grade class at a school, there are two teachers and 25 students. Part A: Suppose that in the rest of the school, there is an identical teacher- to-student ratio. What are two possible numbers of teachers and students at the entire school? Part B: Suppose that five new students join the fifth- grade class. How will that change the teacher to student ratio? Explain why your answer is correct.
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Ответ:
Bruno = 15 years
Mother = 8 + 2(15) = 38 years
Father = 38 + 3 = 41 years
Step-by-step explanation:
Given that :
Let
Bruno's age = x
Mothers age = 8 + 2x
Father's age = 8 + 2x + 3 = 2x + 11
x + 8 + 2x + 2x + 11 = 94
5x + 19 = 94
5x = 75
x = 75 /5
x = 15
Bruno = 15 years
Mother = 8 + 2(15) = 38 years
Father = 38 + 3 = 41 years