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  • A measuring cup contains 1/5 of a cup of orange juice.It is then filled to the 1 cup mark with a mixture that contains e

    A measuring cup contains 1/5 of a cup of orange juice.It is then filled to the 1 cup mark with a mixture that contains equal amounts of orange,grapefurit,and pineapple juices.What fraction of the mixture is orange juice?答案是7/15
    為什么是4/5呢?第二個代數(shù)式解釋下吧~
    英語人氣:856 ℃時間:2020-03-24 21:58:24
    優(yōu)質(zhì)解答
    (1/5)+(4/5)*(1/3)=7/15
    還需要細致解釋不.
    原先那個杯子里已經(jīng)有1/5的橘子汁了;然后題目說"filled to 1 cup"就是說倒?jié)M,那后面混合果汁就占杯子容量的4/5,混合果汁里有3中水果,每種各占1/3,所以混合果汁的橘子汁占杯子總?cè)萘康?/5*1/3=4/15
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