0 votes 0 votes Gold is $19$ times as heavy as water and copper $9$ times as heavy as water. In what ratio should the metals be mixed so that the mixture may be $15$ times as heavy as water ? $3: 2$ $9: 5$ $2: 3$ $7: 5$ Quantitative Aptitude nielit2022feb-scientistd + – Lakshman Bhaiya asked Jul 22, 2022 • edited Aug 27, 2022 by Lakshman Bhaiya Lakshman Bhaiya 13.8k points 203 views answer comment Share See all 0 reply Please log in or register to add a comment.