dickyman asked in 科學及數學數學 · 1 decade ago

數學percent超簡單題..

1.如果A係20%多過B, 咁B少過A幾多?

應該搵邊個黎做份母,份子?

2. 如果C係25%少過D, 咁D多過C幾多?

應該搵邊個黎做份母,份子?

3 Answers

Rating
  • 1 decade ago
    Favorite Answer

    1.如果A係20%多過B, 咁B少過A幾多?

    應該搵邊個黎做份母,份子?

    A(1+20%)=B

    A=5B/6

    A多過B1/6

    2. 如果C係25%少過D, 咁D多過C幾多?

    應該搵邊個黎做份母,份子?

    C(1-25%)=D

    C=4D/3

    C多過D1/3

  • 1 decade ago

    A(1+20%)=B

    A=5B/6

    A多過B1/6

    C(1-25%)=D

    C=4D/3

    C少過D1/3

  • 1 decade ago

    如果A係20%多過B, 咁B少過A幾多?

    應該搵邊個黎做份母,份子?

    A做份子B,做份母

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