1 Answer
1679 views2 Answers
1289 views5 Answers
1185 views1 Answer
1139 views1 Answer
1043 views1 Answer
939 viewsAns will be 9 .
because 240/80=3 hr time
I come back with slow speed, it will be 240/40=6 hr
total time will be 3+6=9 hr is correct answer.
2 Answers
656 views2 Answers
602 views6 Answers
574 views4 Answers
561 views1 Answer
514 views2 Answers
513 views1 Answer
508 views