Question 1189253
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Of all the coins in Kelly’s piggy bank, 30% are pennies, 15% are nickels, 
25% are dimes, and the rest are quarters. If the total value of all the quarters is $60, 
what is the total value of all the coins in Kelly’s piggy bank?
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The number of quarters is  {{{60.00/0.25}}} = 240.


Notice that quarters are 100% - 30% - 15% - 25% = 30% = 0.3 of the number of all coins in the bank.  


The number of pennies is the same 30% of coins - - - it means that the number of pennies is 240 coins.


Next,  the number of nickels is 15% of coins, i.e. half of 240 coins, which is 120 coins.


Finally, the number of dimes is 25% of coins, or  {{{5/6}}} of the number of pennies, i.e. {{{(5/6)*240}}} = 200 coins.



Now we are in position to calculate the total amount, which is

    1*240 + 5*120 + 10*200 + 6000 = 8840 pennies = $88.40.     <U>ANSWER</U>
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Solved.