Question

I'm having trouble with this math question but I think I kinda know what you are supposed to do... I think

Answer 1

We are given the following information

Number of students who sleep 8 hours = 7

Number of students who sleep 7 hours = 6

The number of students who sleep 8 hours and 7 hours are proportional to each other.

If the students who sleep 8 hours decreases by 2 (this means 7 - 2 = 5 hours)

Then the number of students who sleep 7 hours can be found by setting up a proportion

`(7)/(6)=(5)/(x)`

Let us solve the above equation for x.

`\begin{gathered} (7)/(6)=(5)/(x) \\ 7x=5\cdot6 \\ 7x=30 \\ x=(30)/(7) \\ x=4.29 \end{gathered}`

Therefore, the teacher should expect 30/7 hours (or 4.29 hours)