Respuesta :

If you are making 15 center pieces per hour, then you are making 3 per hour.
15/5 = 3
Then you divide how many centerpieces you are making by 3.

42/3 = 14

It will take you 14 hours to make 42.

Hope this helps!
texaschic101
first, we find the unit rate...
centerpieces / hr : 15/5 = 3 centerpieces per hr

for 42 centerpieces...
42/3 = 14 hrs <==

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