Question 984844
{{{11:20am=11.3333h}}}

let's time now be {{{t[n]}}}
if the rocket is set to launch in {{{t=3.75h}}} (or {{{t}}}={{{3h}}}{{{45min}}}) the launch time is {{{t[L]=11:20 am}}}, then

a time  now is {{{t[n]+3.75h=11.3333h}}}

{{{t[n]=11.3333h-3.75h}}}

{{{t[n]=7.58h}}}

{{{t[n]}}}={{{7h}}}{{{35min}}}
or
{{{highlight(t[n]=7:35)}}}{{{am}}}

check:

{{{7h}}}{{{35min}}}
+
{{{3h}}}{{{45min}}}
-----------------------------
{{{10h}}}{{{80min}}}=> since {{{80min=1h+20min}}}, we have

{{{11h}}}{{{20min}}} which is the launch time