Re: [計量] 幾題計量的問題
※ 引述《walk12345 (走路)》之銘言：
: 1) A telephone company offers a special service to suctomers
: who make long-distance call. For an additional monthly charge of
: $8, all long-distance charges in excess of $16 for a month are reduced
: by 50%. If a customer has long-distance charge of $48 for one month
: without the special service, how much would the sudtomer have
: saved if using the special service?
: 給的答案是$8
Using the special service
8(special service加費)+16(未超過16元的部分)+(48-16)*0.5 (超過的部分打五折)=40
故比未使用special service省 48-40=8元
: 2)If 6 gallons of gasline added to a tank that is already filled to
: 3/4 of its capacity, the tank is then filled to 9/10 of its capacity.
: 問:The number of galloms of gasline the tank can hold to capacity?
設總容量x galloms
6+x*(3/4)=x*(9/10)
x=40，故答案為40 gallons
不知道有沒有算錯QQ
: 麻煩各位了~~~~謝謝
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◆ From: 140.113.77.39
※ 編輯: louchanfan 來自: 140.113.77.39 (08/02 16:54)
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