问题标题:
【懂英文和数学的来!百分数问题.InalloyAandalloyB,thereare30%and40%ofironinweightrespectively.Nowanewalloyisformedby6kgofalloyAand2kgofalloyB.Inthenewalloy,(a)whatistheweightofiron?(b)whatpercentageof】
问题描述:
懂英文和数学的来!百分数问题.
InalloyAandalloyB,thereare30%and40%ofironinweightrespectively.Nowanewalloyisformedby6kgofalloyAand2kgofalloyB.Inthenewalloy,
(a)whatistheweightofiron?
(b)whatpercentageofweightisiron?
刘大鹏回答:
a.theweightofiron:6*30%+2*40%=2.6
b.ironpercentageofweigh:2.6/6*100%
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