Question

For a fairground ride the maximum weight of a person is 100kg to the nearest kg.

What is the maximum a person can weigh to go on the ride safely

Answer 1

The maximum a person can weigh to go on the ride safely is 100.5 kg

Explanation:

The specification for the maximum weight of each person that goes on the ride = 100 kg

Therefore, given that the maximum possible error of a measurement is equal to 1/2 multiplied by the unit of measurement, we have that the specified maximum weight,
`W_(max)`, can be written as follows;

`W_(max)` = (100 ± 0.5) kg, which gives the maximum a person can weigh to go on the ride safely as 100 kg + 0.5 kg = 100.5 kg