1 Answer
1670 views2 Answers
1268 views5 Answers
1181 views1 Answer
1119 views1 Answer
928 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
636 views2 Answers
591 views6 Answers
551 views4 Answers
534 views2 Answers
506 views1 Answer
501 views1 Answer
496 views