Juan goes to the bowling alley every 3 weeks her she goes to the bowling alley every 5 weeks it juanand percy me at the first time they go bowling how many weeks will they go will they before they see each other at the bowling alley again

Ok 3 x 5 is 15 and vice versa so it would take them 3 weeks to do so

For this question, you will need to find the least common multiple. You will need to list the multiples of 3 and list the multiples of 5 until you run in to a number that is on both lists. The smallest number on both lists will be your answer, which in this case, will be 15.

Let x = the number of adult tickets you sold.
Naturally, the number of child tickets you sold would be 80-x.
1.25x + 0.75(80-x) = 75
1.25x + 60 - 0.75x = 75
0.5 x = 15
x = 30
adult tickets = 30
child tickets = 80-30 = 50