Question

Three students run on concentric circular running tracks , starting from a common Base they touch Base after every 35 , 50 , 75 sec . If they start at 8 am , when will they all touch the Base together again . I want the answer in a detailed way please

Answer 1

Answer:

8:17 and 50 second

Step-by-step explanation:

Find the LEAST COMMON MULTIPLE of the three given numbers

L.C.M. 30,50,75 = 1050

so They all together will touch on the 1050 th second from the start

1050sec = 1050/60 min = 17.5 min

they all will touch together at

8:00 + 17.5 = 8:17 and 50 second