Question 1160888
.
<pre>


Let the total number of coins be N.


Then  the number of quarters is  {{{N/3}}},  according to the description.


Next,  the number of loonies is  {{{N/5}}}.


The rest of coins are toonies.


It gives you an equation for total coins


    {{{N/3}}} + {{{N/5}}} + 56 = N.


To solve it, multiply both sides (and each term) by 15.  You will get


    5N + 3N + 56*15 = 15N

    56*15           = 15N - 5N - 3N

    56*15           = 7N

    N               = {{{(56*15)/7)}}} = 8*15 = 120.     <U>ANSWER</U>
</pre>

Solved.