Answer:
Its -12 if a is meant to be multiplied
Different Number , 23 is in the 2 digets and 9 is at the one digets one of them is low one of them is high
The distance between them is 252 miles
For meeting they reduce the distance with 252 miles
in an hour they reduce distance with 100+80=180 miles
180 miles...........1 hour
252 miles.............x hours
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x=252 /180=1,4 hours=84 minutes
