[計量] 請問兩題PP的問題
On a certain sight-seeing tour, the ratio of the number of women to the
number of children was 5 to 2. What was the number of men on the sight-seeing
tour?
(1) On the sight-seeing tour, the ration of the number of children to the
number of men was 5 to 11.
(2) The number of women on the sight-seeing tour was less than 30
Ans:C
Machines X and Y work a their respective constant rates. How many hours does
it take machine Y, working alone, to fill a production order of a certain
size than machine X, working alone?
(1) Machines X and Y, working together, fill a production order of this size
in two-thirds the time that machine X, working alone, does
(2) Machine Y, working alone, fills a production order of this size in twice
the time that machine X, working alone, does.
Ans:E
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