Question

Part A :

A machine that bottles apple juice is set so that every 6th bottle gets a red label and every 9th bottle gets a blue cap. The machine.
Part B :
The machine is reset so that every 10th bottle gets a special gold band around the label. What number bottle will be the first to get a red label, a blue cap, and a gold band ?

Answer 1

The 90th

Explanation:

You have to find the least common multiple of 6, 9, and 10 because that will be the first one when all three are on the bottle.

The least common multiple is 90.