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olga55 [171]
3 years ago
8

Help me please guys!!!

Mathematics
1 answer:
bulgar [2K]3 years ago
3 0
I assume you're asking about #19? 
24 students total, teacher gives each PAIR of students 3 magnets. 
There are 12 pairs of students, then, and the teacher has given 9 of those pairs their 3 magnets, leaving 3 pairs without their magnets.
3 pairs remaining to get 3 magnets (3*3=9) 
The teacher needs 9 more magnets.
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