Answer:
The number of students that bring their lunches is 12
Step-by-step explanation:
Let
x -----> the number of students that bring their lunches
y -----> the total number of students in a class
we know that
The number of students that bring their lunches divided by the total number of students in a class must be equal to 3/8
-----> equation A
-----> equation B
substitute the value of y in equation A and solve for x
therefore
The number of students that bring their lunches is 12
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40 ÷ 2.40= 16.66
the teacher can buy 16 cookies
2 hours. If you convert 25% into a fraction form, it’s 1/4. Divide 8 by 4 and you get 2.