hard · GMAT Quant
An agricultural greenhouse has three automated misting valves, V_1, V_2, and V_3, that open on repeating cycles of 5 minutes, 8 minutes, and 12 minutes, respectively. Valve V_1 opens on minute 1 of its 5-minute cycle, V_2 opens on minute 1 of its 8-minute cycle, and V_3 opens on minute 1 of its 12-minute cycle. In a 360-minute window starting at minute 1, during
How many minutes are exactly two misting valves open simultaneously?
- 63
- 30
- 21
- 22
- 14
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