Data:
$50 dollars in bills → 50 coins of one dollar
Estimate the mass of one dollar coin
Solving:
50 coins → 405 grams
1 coin → x
The rule of three
50*x = 405*1
50x = 405
[tex]x = \frac{405}{50} [/tex]
[tex]x = 8,1 [/tex]
We have:
[tex]\boxed{x \approx 8grams/coin}[/tex]
