car B is running twice as fast as car A if car A covers a distance of 90 km in in 1.5 hour

Playlists••• ○ RRB NTPC prelims (30-03- 2016 ):   • RRB NTPC prelims( 30-03-2016)   ○ RRB NTPC prelims (31-03- 2016 ):   • RRB NTPC prelims( 31-03-2016)   ○ RRB NTPC prelims( 02-04 -2016 ):   • RRB NTPC prelims( 02-04 -2016 )   ○ RRB NTPC prelims( 03-04 -2016 )-2:    • RRB NTPC prelims( 03-04 -2016 )-2   ○ RRB NTPC prelims( 03-04 -2016 )-1:    • RRB NTPC prelims (03-04 -2016)-1   ○ RRB NTPC prelims( 04-04 -2016 ):    • RRB NTPC prelims( 04-04- 2016)   ○ RRB NTPC prelims( 05-04 -2016 ):   • RRB NTPC prelims (05-04 --2016)   ○RRB NTPC prelims (0 6 -0 4 -2016)-3:   • RRB NTPC prelims (06-04 -2016)- 3   ○RRB NTPC prelims (0 6 -0 4 -2016)-2:   • RRB NTPC prelims(06-04-2016) -2   ○RRB NTPC prelims (0 6 -0 4 -2016)-1:   • RRB NTPC prelims (0 6 -0 4 -2016) 1   ○RRB Gr D prelims (17-09-2018):   • RRB group D prelims( 17 -09 -2018) – 1   ○RRB NTPC prelims (09-04- 2016):    • RRB NTPC prelims (09-04 -2016)   ○RRB NTPC prelims (10-04- 2016): https://www.youtube.com/playlist?list... ○Algebra Best 150 questions for RRB NTPC group D:    • Algebra Best 150 questions   ○RRB NTPC prelims (11-04- 2016)- 2:    • RRB NTPC prelims (11-04- 2016)- 2   ○RRB NTPC prelims( 11 -04 -2016)-1:    • RRB NTPC prelims( 11 -04 -2016)-1   ○RRB NTPC prelims (12-04 -2016):    • RRB NTPC prelims (12-04 -2016)   ○RRB NTPC prelims (16-04 -2016) -3:    • RRB NTPC prelims (16-04 -2016) -3   ○RRB NTPC prelims (16-04-2016 )-2:    • RRB NTPC prelims (16-04-2016 )-2   ○Geometry Questions:    • Geometry Questions   ○RRB NTPC prelims (16-04-2016)-1:    • RRB NTPC prelims (16-04-2016)-1   ○RRB NTPC prelims( 18 -04 -2016 ):    • RRB NTPC prelims( 18 -04 -2016 )   ○RRB NTPC prelims (19-04 -2016):    • RRB NTPC prelims (19-04 -2016)   ○RRB NTPC prelims (22-04- 2016):    • RRB NTPC prelims (22-04- 2016)   ○RRB NTPC_prelims( 26-04- 2016):    • RRB NTPC_prelims( 26-04- 2016)   ○Trigonometry RRB NTPC/GR. D/SSC CGL/SSC CHSL:    • Trigonometry RRB NTPC/GR. D/SSC CGL/SSC CHSL   ○RRB NTPC prelims (27-04 -2016)-3:    • RRB NTPC prelims (27-04 -2016)-3   ○RRB NTPC MAINS 2017 (CBT EXAM )-1:    • RRB NTPC MAINS 2017 (CBT EXAM )-1   ○Co ordinate Geometry  one shot video:    • Co ordinate Geometry  one shot video   ○RRB NTPC_prelims ( 27-04 -2016) -2:    • RRB NTPC_prelims ( 27-04 -2016) -2   ○RRBNTPC_PRELIMS (27-04-2016)-1:    • RRBNTPC_PRELIMS (27-04-2016)-1   ○RRBNTPC_PRELIMS (28-04-2016)-2:    • RRBNTPC_PRELIMS (28-04-2016)-2   ○RRBNTPC_PRELIMS (28-04-2016)-1:    • RRBNTPC_PRELIMS (28-04-2016)-1   ○RRBNTPC_PRELIMS (29-04-2016):    • RRBNTPC_PRELIMS (29-04-2016)   ○Mensuration Questions:    • Mensuration Questions   ○RRB NTPC  MAINS 2017 (CBT EXAM )-3:    • RRB NTPC  MAINS 2017 (CBT EXAM )-3   ○GEOMETRY  - RRB NTPC / GR D (advance math formula revision):    • GEOMETRY  - RRB NTPC / GR D (advance math ...   ○RRB NTPC MAINS 2017 (CBT EXAM )-2:    • RRB NTPC MAINS 2017 (CBT EXAM )-2   #rrb_ntpc #ssc_cgl#ssc_mathon #rrb_ntpc_previous_year #RRBNTPCMaths#RRBNTPCMAINS#SSCCGL#ssccglmaths#competitivemaths