2. 职称英语
  3. n/4+r/8=s/5+t/10n, r, s and t are positive integersQuantity A: 2n+rQuantity B

n/4+r/8=s/5+t/10n, r, s and t are positive integersQuantity A: 2n+rQuantity B

游客2025-02-23  32
问题 n/4+r/8=s/5+t/10
n, r, s and t are positive integers
Quantity A: 2n+r
Quantity B: 2s+t
选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案 B
解析 设n/4+r/8=s/5+t/10=m，那么2n+r=8m，2s+t=10m，由于n，r，s，t都是正整数，因此m也是正整数，所以答案为B。
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