单选题
If 27
P
×3
2
=3
4
×9
8
, what is the value of p?
A、
3
B、
6
C、
8
D、
15
E、
16
【正确答案】
B
【答案解析】
Once we simplify 27
P
×3
2
=3
4
×9
8
, we get(3
3
)
p
×3
2
=3
4
×(3
2
)
8
, or 3
3p
×3
2
=3
4
×3
16
. That is the same as 3p+2=4+16, so p must equal 6.
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