Answer:
They will all meet at the tennis court again in 60 days after this Monday.
Step-by-step explanation:
When two events, A and B, happen every x and y days, respectively, they will happen on the same day in each lcm(x,y) days. lcm(x,y) is the lesser common multiple of x and y which is not 0.
In this question:
Jerry each 6 days.
Sam each 10 days.
Leo each 12 days.
Multiples of 6: {0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60,...}
Multiples of 10: {0, 10, 20, 30, 40, 50, 60, ...}
Multiples of 12: {0, 12, 24, 36, 48, 60,...}
The lesser common multiple is 60.
So
They will all meet at the tennis court again in 60 days after this Monday.
