Question

a circular field has a circumference of 360 km 3 cyclist start together and can cycle 4860 and 72 km around the field when will they meet again

Answer 1

Cyclist 1: Covers the entire circumference of field in 360/48 = 7.5 days = 180 hours Cyclist 2: Covers the entire circumference of field in 360/60 = 6 days = 144 hours Cyclist 3: Covers the entire circumference of field in 360/72 = 5 days = 120 hours LCM of 180, 144, 120 gives when they would meet LCM = 720 hours = 720/ 24 = 30 days