7. Carol took the subway to a local carnival. When she wanted to go home she looked up
subway times. The L train and the R train
both stop at the carnival.
• The L train and the R train both left the
carnival at 2:30 pm
• The L trains were scheduled to leave every 8
minutes.
• The R trains were scheduled to leave every 6
minutes.
If the trains run on schedule, when is the next
time a L and R train will leave together?