<PRE><B>Question 1153170</B>
&lt;br&gt;
Solving the problem mentally, with the &quot;80% more pennies than nickels&quot; I would say for every 5 nickels there are 9 pennies.&lt;br&gt;
Then each group of 5 nickels and 9 pennies has a value of 34 cents.&lt;br&gt;
The total $22.10, divided by 34 cents, gives 65 groups.&lt;br&gt;
Finally, since each group contains 5 nickels, the number of nickels is 65*5 = 325.&lt;br&gt;
Formally....&lt;br&gt;
Let x = number of nickels
Then 1.8x = number of pennies&lt;br&gt;
The total value of the nickels at 5 cents each and the pennies at 1 cent each is $22.10, or 2210 cents:&lt;br&gt;
{{{5(x)+1(1.8x) = 2210}}}
{{{5x+1.8x = 2210}}}
{{{6.8x = 2210}}}
{{{x = 2210/6.8 = 325}}}&lt;br&gt;
ANSWER: 325 nickels&lt;br&gt;
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