look at Ms Sue's solution for this question
http://www.jiskha.com/display.cgi?id=1473473272
and then adjust it to yours.
three fireworks are fired at the same time.
The first one is fired every 64 seconds, the second one is fired every 84 seconds and the third one is fired every 96 seconds.
How many seconds after they start will it take until all three fireworks are again fired together?
1 answer
1 answer