self Maths Puzzle

AB+BA=CAC Then what is A,B,c?

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self Other Question

Two trains for Howrah leave muzaffapur at 8.30 a.m. and 9.30 a.m. respectively and travel at 60km/h and 70 km/h respectively. How many kilometers from muzaffapur will the two train meet?
options: A 210 km B 180 Km c 150 Km D 120km
AB+BA=CAC then Find A,B,C?