Saved Bookmarks
| 1. |
17. The ratio of zinc and copper in an alloy is 7:9. If the weight of copper in the alloy is 11.7 kgfind the weight of zinc in it.128 km in 2 hours and a train covers 240 km in 3 hours. Find the ratio di |
|
Answer» Answer: 9.1kg Step-by-step explanation: Let WEIGHT of Zinc= 7x and Copper= 9x=11.7kg Let weight of Zinc= 7x and Copper= 9x=11.7kg9x=11.9kg Let weight of Zinc= 7x and Copper= 9x=11.7kg9x=11.9kgx= 1.3 Let weight of Zinc= 7x and Copper= 9x=11.7kg9x=11.9kgx= 1.3Therefore, Zinc= 7x= 7*1.3= 9.1kg |
|