Question

Out of all the buses, bus for destination A arrives at a bus station after every 20 minutes, bus for destination B arrives at the same station after every 18 minutes and train for destination C arrives at the station after every 16 minutes. After how many hours, will all the three buses arrive at the station together?

Answer 1

Answer:

The 3 buses will arrive at the station together after 12 hours.

Step-by-step explanation:

The time when all the buses will arrive at the station together = LCM of 20,18 and 16 = 2×2×2×2×3×3×5 = 720 minutes =

$\frac{720}{60} = 12 \: hours$