Answer:
It will take 15 minutes to print all 315 posters
Explanation:63/3 to find the rate of posters per minute
63/3=21
21 posters per minute
then 315/21 to find how many minutes it takes for all of the posters
315/21=15
divide 63 by 3 to get how many copies will be made in 1 min, 63/3= 21
divide 315 to 21 to know how many min it will take= 315/21= 15
It will take 15 min to make 315 copies!
Explanation:
Hope this helps!!!
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