A-A+
Marcella has 25 pairs of shoes. If she loses 9
问题详情
Marcella has 25 pairs of shoes. If she loses 9 individual shoes, what is the greatest number of matching pairs she could have left？
A．21
B．20
C．19
D．16
E．15
参考答案
正确答案：B
解析：The greatest number of matching pairs remaining will occur when the greatest number of lost shoes are part of matching pairs; if four matching pairs and one other individual shoe were lost, then Marcella would still have 20 matching pairs left.
