Re: [計量] 請教兩題計量
※ 引述《Alan655 (用心感覺)》之銘言:
: Q1. A1,Lew, and Karen pooled their funds to buy a gift
: for friend. A1 contributed $2 less than 1/3 of the
: cost of the gift and Lew contributed $2 more than
: 1/4 of the cost. If Karen contributed the remaining
: $15, what was the cost of the gift?
: Ans:36 (可是我一直算22.5...)
三人和買禮物, A出禮物價錢的 1/3少兩元, L出價錢的 1/4多兩元, K出剩餘
的15元,問禮物原價為何?
設禮物原價 x元,則 x = x/3 - 2 + x/4 + 2 + 15,解得 x = 36
: Q2. Four cups of milk are to be poured into a 2-cup
: bottle and a 4-cup bottle. If each bottle is to
: be filled to the same fraction of its capacity,
: how many cups of milk should be poured into the
: 4-cup bottle?
: Ans:8/3
四杯牛奶要分別裝一個進相當於兩杯大小跟另一個相當於四杯大小的瓶子裡面,
若裝的容量必須要跟瓶子大小城比例,則相當於四杯大小的瓶子要裝多少杯。
四杯按照 1:2的比例去分就好,因此 4 * 2/3 = 8/3
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04/02 10:47, , 1F
04/02 10:47, 1F
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