It could be B but double check to be sure
250 seconds because it takes Mary 50 seconds to get around the track (300feet/6ft/sec) and it takes Peter 300 seconds to get around the track (300ft/1ft/sec) so if you subtract the fastest time from the shortest time you get the amount of time that Mary had to wait for Peter to get there, so after 250 sec (300sec-50sec) Peter, Paul, and Mary are reunited.
119998.40 120000-1.60=119998.4 Hope I helped out some!!
Answer:
2:25
Step-by-step explanation:
Your specific question was how many " hours " did he work this week so,
Monday: 7 whole hours
Tuesday: 5 whole hours
Wednesday: 6 whole hours
Thurs.-Fri.: Was off.
So that makes 7+5+6=18 hours.
The 30 minutes from Monday & 20 minutes from Tuesday doesn't equal one whole hour so it doesn't count.
