Question 895713
The text should be this way:
12/3.60=1/Q


The question mark will not permit rendering so I replaced it with Q.


The triple brace left and right tags will make the proportion,
{{{12/3.60=1/Q}}}


Their reciprocals are equal.

{{{3.60/12=Q/1=Q}}}


{{{Q=3.60/12=36*(0.1)/12=0.3}}}


{{{highlight(Q=0.3)}}}