小弟想請教幾題計量問題請大大幫忙解惑
1. One month Mary used 1/6 of her monthly salary for a car payment
and 1/4 more than the car payment for rent. What fraction of her
monthly salary did Mary use that month for the car payment and rent
combined?
(A) 5/24 (B) 3/8 (C) 5/12 (D) 1/2 (E) 7/12
2. Let {X} = 3, if X is an odd integer；
Let {X} = 6, if X is an even integer.
r and s are integers, 3r is odd, and 5+S is odd.
試比較大小 (A) {r} (B) {s}
3. By weight, liquid A makes up 7.0 percent of solution I and 14.5 percent
of solution II. If 3 grams of solution I is mixed with 2 grams of solution
II, then liquid A accounts for what percent of the weight of the resulting
solution?
(A) 6.09% (B) 10% (C) 10.75% (D) 21.5% (E) 50%
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