Question

Usain Bolt set a world record for 100m sprint in 9.58 seconds. Convert this time in seconds into a decimal fraction of an hour.

Answer 1

$\bf 9.58\underline{sec}\cdot \cfrac{1\underline{min}}{60\underline{sec}}\cdot \cfrac{1hr}{60\underline{min}}\implies \boxed{?}$

cancel the units as needed