[計量] A manufacturer packages soap powder ...
A manufacturer packages soap powder in containers of three different sizes.
The amount of soap power in a full large container could fill exactly 3
of the medium containers or exactly 5 of the small containers.
If an equal number of small and large containers are to be filled with
the amount of soap powder that would fill 90 medium containers,
how many small containers will be filled?
Ans:25
這題我領會的意思是：一個大的可以裝三個中的或是五個小的
所以就是 1 Big = 3 Mediun = 5 Small
==> 30 Big = 90 Mediun = 150 Small
題目問說:90個中的要等於X大的+X小的，
所以為什麼不是90*3 = X + 5X ？
這題我腦子怎麼樣都轉不過來~"~
希望板上的大大們指點一下
謝謝^___^
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