Gold is 19 times as heavy as water and copper 9 times. In what ratio should these metals be mixed so that the mixture may be 15 times as heavy as water?

  • Option 1)

    5 : 6

  • Option 2)

    3 : 2

  • Option 3)

    2 : 3

  • Option 4)

    4 : 5

  • Option 5)

    1 : 2

Answers (1)
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