document.write( "Question 210318: A child's bank contains $2.24 in pennies and nickels. If the number of pennies is 40 less than 3 times the number of nickels, then how many pennies are in the bank? \n" ); document.write( "
Algebra.Com's Answer #158918 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A child's bank contains $2.24 in pennies and nickels. If the number of pennies is 40 less than 3 times the number of nickels, then how many pennies are in the bank? \n" ); document.write( "---------------- \n" ); document.write( "Value Equation: p + 5n = 224 cents \n" ); document.write( "Quantity Eq:::: p = 3n-40 \n" ); document.write( "---------------------------------------- \n" ); document.write( "Substitute to solve for \"n\": \n" ); document.write( "3n-40 + 5n = 224 \n" ); document.write( "8n = 264 \n" ); document.write( "n = 33 (number of nickels) \n" ); document.write( "--- \n" ); document.write( "Substitute into p = 3n-40 to solve for \"p\": \n" ); document.write( "p = 3*33-40 = 99-40 = 59 (# of pennies) \n" ); document.write( "============================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |