Question

.In sports Day activities of a school, three cyclists start together and can cycle 48 km, 60 km and 72 km a day round the field. The field is circular, whose circumference is 360 km. After how many rounds they will meet again?
(a) 1 round
(b)2 rounds
(c) 3 rounds
(d) 4 rounds​

Answer 1

Answer:

cyclist no. 1 - 48   km

cyclist no. 2 - 60   km

cyclist no. 3 - 72   km  

circumference   - 360 m  

 

answer- we will take the lcm of the speeds of the cyclists

that will be 48 X 60 X 72 =  207360  

then we will divide it by 360  

after 576 rounds they will met together