SOLUTION: Kasey and Joe were walking on a circular track. It took Kasey 21 min. to go one mile, and Joe 18 min. How many minutes before they see each other again?

Question 1050941: Kasey and Joe were walking on a circular track. It took Kasey 21 min. to go one mile, and Joe 18 min. How many minutes before they see each other again?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Kasey and Joe were walking on a circular track.
It took Kasey 21 min. to go one mile, and Joe 18 min.
How many minutes before they see each other again?
:
Find the Least common multiple of 21 and 18, using prime factoring
21: 3 * 7
18: 2 * 3 * 3
LCM: 2 * 3 * 3 * 7 = 126 min
RELATED QUESTIONS
if two people are running around a one mile track, and one of them can finish a lap in 14 (answered by ankor@dixie-net.com)

If tom can fill a swimming pool in 30 min, sally can fill one in 45 min, and Joe can fill (answered by ankor@dixie-net.com)

One task took 7 minutes (min), a second task took 12 min, and a third task took 21 min.... (answered by Fombitz)

salutations, if it took 1hr & 10 min to walk 2 mile how fast were they walking? Thank U,... (answered by sachi)

Ann, Beth, and Cathy start walking from the same place counter clockwise around a... (answered by ikleyn)

Emily and Ernie are going to job on a quarter-mile track. Emily can jog at a pace of 0... (answered by ankor@dixie-net.com)

If I'm traveling at 70 mph and have 40 mile to go befor I reach my destination how many... (answered by Theo)

Sue and Joe are opposite side of a circular lake that is 1260 feet in circumference. They (answered by Alan3354)

Imelda, susan and clara are driving go carts around a track. Imelda takes 14 min, susan... (answered by josmiceli)