Question

The average weight of a class of 24 students is 36 years. When the weight of the teacher is also included, the average weight increases by 1kg.

What is the weight of the teacher?

Answer 1

The weight of the teacher is 61 kg.

Given that the average weight of 24 students is 36 kg when the weight of the teacher is included, the average weight becomes 1 kg more.

To find: the weight of the teacher.

`\text{Total weight of students = average weight} *\text{no of students}`

`=36 \ \text{kg} * 24`

`=864 \ \text{kg}`

Let the teacher's weight be x so,

`((x + 864))/(25) = 37`

`x + 864= 25 * 37`

`x + 864 \ \ \text{kg} = 925`

`x = 925 - 864`

`x=61`

So, the teacher's weight is
`\bold{x = 61}` kg.