Question

The ratio of copper and zinc in the alloy is 9 : 5 if the weight of copper in the alloy is 48.6 grams, find the weight of zinc in the alloy. ​

Answer 1

Answer:

$9x = 48.6 \\ x = \frac{48.6}{9} \\ x = 5.4 \\ zinc = 5 \times5.4 \\ 2.7$

Answer 2

Using ratio and proportion concept
9:5::48.6:x
9x= 48.6*5
X= 27 GMs