#### Answer

$9$ of each coin.

#### Work Step by Step

Let the amount of each coin be $m$.
Then, $x+5x+10x$ is the value of the coins, which the problem stated was $144$.
Set up the equation $(1+5+10)x=144$.
Solving for $x$, $x=\frac{144}{(1+5+10)}=\frac{144}{16}=9$ of each coin.