Given:
Time length of first movie = 120 min
time length of second movie = 100 min
start time = 12 pm
To find:
What time will they start together again
Steps:
for this question we have to find LCM of both of them,
120 = 2 * 2 * 2 * 3 * 5
100 = 2 * 2 * 5 * 5
LCM = 2 * 2 * 2 * 3 * 5 * 5
LCM = 4 * 2 * 3 * 5 * 5
LCM = 8 * 3 * 5 * 5
LCM = 24 * 5 * 5
LCM = 120 * 5
LCM = 600 min
600 min = 600/60 hr
= 10 hours
Therefore, they will start again at 10 o'clock
Happy to help :)
