[計量] 請問兩題BigBook上計量
連題目意思都看不太懂
請大家幫我講解一下
並說明為什麼是這答案
拜託了
謝謝!!
p741 第29題
Of the positive integers that are multipies of 30 and are less than
or equal to 360, what fraction are multiples of 12?
(A)1/6
(B)1/5
(C)1/3
(D)2/5
(E)1/2
p760 第28題
S is the sum of three consecutive integers, the greatest of which is X.
In terms of S, which of the following is the sum of three consecutive
integers, the least of which is X ?
(A)S-6
(B)S-3
(C)S+3
(D)S+6
(E)2S
謝謝唷!!!
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