【数学题说出为啥?Juanmade2Loflemonadethatconsistsof40%purelemonjuice.Howmuchwatermustheaddtodiluteitto30%lemonjuiceA:1/3literB:1/2literC:2/3literD:1/1/3liters公式为2(0.4)=X(0.3)求出X并选出是几】 |
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