Maths Gold is 19 times heavier than water and copper is 9 times heavier than water. In what ratio should these metals be mixed to make an alloy that is 15 times heavier than water?
| Q.201166: Gold is 19 times heavier than water and copper is 9 times heavier than water. In what ratio should these metals be mixed to make an alloy that is 15 times heavier than water? |
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