unit(s)

New2grammar wrote:

In what unit(s) is distance measured? Since the there are multiple units in which distance is measured, should I use the plural form 'units'? For example, Meter is one unit to measure distance and kilometer is another unit. Together, they are two units. What if I know that there is only one unit involved, for example, X-axis on a XY-plot, should I ask 'In what unit is distance measured?' ?

What unit is it measured in?

New2grammar wrote:

Ok. I think your rational is something similar to "Who is going to attend the meeting?'. Can I use the plural form too if I know there will be more than 1 person attending- 'Who are going to attend the meeting'? Similarly, 'In what units is distance measured?'.

"Can I use the plural form too if I know there will be more than 1 person attending" Yes

'In what units is distance measured?' -- correct