document.write( "Question 386717: Jack bought $8 worth of 6-cent and 8-cent stamps numbering 110 stamps in all. How many stamps of each kind did he buy? \n" ); document.write( "
Algebra.Com's Answer #273339 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Jack bought $8 worth of 6-cent and 8-cent stamps numbering 110 stamps in all. How many stamps of each kind did he buy? \n" ); document.write( "----------------- \n" ); document.write( "Equations: \n" ); document.write( "Quantity: s + e = 110 \n" ); document.write( "Value 6s + 8e = 800 cents \n" ); document.write( "---- \n" ); document.write( "Multiply thru the Quantity Eq by 6 \n" ); document.write( "6s + 6e = 6*110 \n" ); document.write( "--- \n" ); document.write( "Subtract that from the Value Eq and solve for \"e\": \n" ); document.write( "2e = 140 \n" ); document.write( "e = 70 (# of eight cent stamps) \n" ); document.write( "--- \n" ); document.write( "Since s + e = 110, s = 110-70, s = 40 (# of 6 cent stamps) \n" ); document.write( "====================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=========== \n" ); document.write( " |