Sandra uses two entire erasers for every 15 questions she answers. If erasers come in packs of 12, at least how many packs does she need for her 100-question test?
A.
2
B.
3
C.
4
D.
5
Exam No：2020 First Round Grade 3 Year：2020 Question No：30
Answer:
A
Knowledge points:
G3 - Measurement - Rate and Speed
Solution:
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