her total money = 1500 + 250
= $1750
expenditure= 122 + 287 + 61
= $470
left over money = 1750 - 470
= $1280
Answer:
C
Step-by-step explanation:
Girls - 28-12 = 16
16:12 = 4:3 - so answer choice C
1 student in each group with 126 groups in total
Answer: 100
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