Question

Two security guards, Dave and Geoff, are patrolling an airbase. Dave passes the front gate
every 8 minutes. Geoff passes the front gate every 15 minutes. They have just set off on their
individual routes at the start of their shift.
How long will it be before they meet up at the front gate again?

A 2h 00mins
B 1h 30mins
C 1h 00mins
D 2h 30mins
E 3h 00mins

Answer 1

8, 15 | 2

4, 15 | 2

2, 15 | 2

1, 15 | 3

1, 5 | 5

1, 1

mmc(8, 15) = 2³ x 3 x 5

mmc(8, 15) = 8 x 3 x 5

mmc(8, 15) = 120 minutos = 2 horas

Letra A