Question 1141598
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Since I have typed the same kind of thing a thousand times, I can be fairly certain that "#1 L" is supposed to be "31 L", since "#" is shift-3 on a standard keyboard.<br>
So she used 31-11 = 20L of gas before the low fuel warning light came on.  At 9.3L per 100km, the number of km she drove before the light came on was<br><pre>

           100km
   20 L * ------- = 215 km (to the nearest whole number)
           9.3L</pre>
Since she drove at 100 km/h, her driving time, from her start at 1:30 pm to when the light came on, was 2.15 hours, or 2 hours 9 minutes.<br>
ANSWER: The warning light came on at about 3:39 pm.