SOLUTION: 1. A taxi arrives every 15 minutes and a bus arrives every 12 minutes. When will they arrive at the same time? How do you get the answer? 2. The situation changes and the taxi ar

Question 848907: 1. A taxi arrives every 15 minutes and a bus arrives every 12 minutes. When will they arrive at the same time? How do you get the answer?
2. The situation changes and the taxi arrives every 12 minutes and the bus every 18 minutes. When is the first time they arrive at the same time? How do you get to the answer?
Thanks
Carlo
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1) 60 minutes
3*5 and 3*4
3*4*5=60
2)
36 minutes
3*4=3*2*2=6*2
3*6=3*2*3=6*3
6*2*3=36

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