Respuesta :
There are many answers. Here are some...
6:20
9:30
12:40
15:50
18:60
And so on. Count by threes for the first number and count by tens for the second number. :)
6:20
9:30
12:40
15:50
18:60
And so on. Count by threes for the first number and count by tens for the second number. :)