Question

Two people are clapping their hands but with different frequencies. ramya claps her hands 17 times per 3 min and kumar claps his hands 31 times per 5 min. they start clapping at the same time. how many times does each one clap before they clap together at the same time?

Answer 1

The LCM of 17 and 31 is 527So they will have to clap 527 time to clap togather the next time . Ramya can clap 527 in 93 min ( 527 / 17 ) × 3And kumar can clap 527 in 85 min( 527 / 31 ) × 5

Answer 2

lcm of 3 and 5 is 15
so simultaneously clap after 15 min
A s claps = 5 *17=85
B s claps = 3*31 = 93