Answer:
The mass of one nickel is 5 grams.
Step-by-step explanation:
This question can be solved by proportions, using a rule of three.
In this question:
9 nickels have a mass of 45 grams. So one nickel will have a mass of:
9 nickels - 45 grams
1 nickel - x grams
Applying cross multiplication
[tex]9x = 45[/tex]
[tex]x = \frac{45}{9} = 5[/tex]
The mass of one nickel is 5 grams.
