other govt exam India Post Postman & Mail Guard Mock Test 2020 Quantitative Aptitude Ratio and Proportion Simple Ratios
The ratio of copper and zinc in an alloy is 7 : 3 respectively. If the weight of the copper in the alloy is 30.8 g. Find the weight of zinc in the alloy.
1
13.2 g
2
12.2 g
3
14.2 g
4
11.2 g