Question

1. The number of people attending a school meeting was 80. There were four times as many parents as supervisors atthe meeting. How many supervisors attended the meeting? How many parents?Let x = number of supervisors at the meeting.4x = number of parents at the meeting

Answer 1

Step 1: Write out the information provided in the question.

Number of people attending the meeting is 80.

Let the number of supervisors be x

Since there were four times as many parents as supervisors, then the number of parents will be 4x

Step 2: convert the above information to mathematical equation, the number of people attending the meeting equals to the sum of the parents and the supervisors, thus,

`x+4x=80`

Step 3: Solve the above equation to get the value of x

`\begin{gathered} x+4x=80 \\ 5x=80 \\ (5x)/(5)=(80)/(5)(\text{divide both side by 5)} \\ x=16 \end{gathered}`

Step 4: Since the number of supervisors equals x which is 16, the number of parents attending the meeting will be 4x which is

`4x\Rightarrow4*16=64`

Hence, 16 supervisors and 64 parents attended the meeting