Work-Time Problem short cut trick (without any formula), SSC CGL,CHSL, RRB NTPC, GROUP D, BANK EXAMS

Work-Time Problem short cut trick (without any formula), SSC CGL,CHSL, RRB NTPC, GROUP D, BANK EXAMS
Work-Time Problem short cut trick (without any formula), SSC CGL,CHSL, RRB NTPC, GROUP D, BANK EXAMS
Work-Time Problem short cut trick (without any formula), SSC CGL,CHSL, RRB NTPC, GROUP D, BANK EXAMS

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