Answer:
480
Explanation:
First we need to find what 3/5 of 1200 is3/5 of 1200 is 72
now we do 1200 - 720
1200 - 720 = 480
2/5 of 1200 = 480
480 necklaces are left
720
I'm pretty sure that's the answer, sry if I'm wrong
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