Eric, Fiona, and George stand at the starting line of a running track and begin running laps at the same time. Eric runs one lap every 4 minutes, Fiona runs one lap every 5 minutes, and George runs one lap every 6 minutes. After they start, how long will it take for all three runners to be back at the starting line at the same time?

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82