Posted by **Tom** on Tuesday, June 11, 2013 at 5:46am.

Alvin, Calvin and Melvin are running laps around a track. Alvin runs a lap every 4 minutes, Calvin runs a lap every 6 minutes and Melvin runs a lap every 9 minutes. If they start off at the same point, how many minutes will it take before all three of them are back at the starting point?

- Math -
**anonymous**, Tuesday, June 11, 2013 at 7:23am
36

## Answer This Question

## Related Questions

- Math - Fred runs a lap every 2 minutes and Mark runs a lap every 2.5 minutes. ...
- Math - Pedro and Steve are running laps. Pedro runs a lap in 6 minutes and Steve...
- math - two runners jog around an oval path at constant rates, but in opposite ...
- algebra - Two runners jog around an oval path at constant rates, but in opposite...
- algebra - two runners jog around an oval path at constant rates, but in opposite...
- algebra - Two runners jog around an oval path at constant rates, but in opposite...
- Math - In the formula d = rt, the time t varies inversely with the rate r. A ...
- Math - In the formula d = rt, the time t varies inversely with the rate r. A ...
- math - Alvin, Calvin and Melvin each have some positive integer number of sweets...
- algebra - Alvin, Calvin and Melvin each have some positive integer number of ...

More Related Questions