Question

Two alarm clocks ring their alaram at regular intervals of 50 second and 48 second resp if first beep together at 12 noon at wat time they will beep together

Answer 1

ANSWER :

They will beep together after any interval which is multiple of both I.e. 50 and 48

We have to find the lcm of 48 and 50

48= 2×2×2×2×3

50= 2×5×5

Lcm of 50 and 48 = 2×2×2×2×2×5×5 = 1200

So the bell will ring after 1200 secs = 20 mins

Time= 12:20 Pm