Question

Two people are beating their drums. First drum beaten after every 5 seconds... Second drum beaten after every 7 seconds. What time will they beat drums together at the same time for the second time.

Answer 1

Answer:

after 70 s

Step-by-step explanation:

first drum beaten after every 5 s

second drum beaten after every 7 s

therefore, they will be beaten together for the first time at-

[LCM OF 5 AND 7] after 35 seconds.

Therefore, they will beat together for the second time= 35*2=70 s

Ans, they will beat together the second time after 70 seconds.