Question

In the county sports Stefan was timed at 28.6s for the 200 m

What is the upper bound for the time she could have taken?

Answer 1

Upper bound = 28.65s

Explanation:

Since it is a unit of time and it is a decimal the unit of accuracy will 0.1 , we will halve it and it will be 0.05

0.1 ÷ 2 = 0.05

Upper bound = 28.6 + 0.05 = 28.65

Lower bound = 28.6 - 0.05 = 28.55