document.write( "Question 213151: A large bucket holds 3 liters more than twice as much as a small bucket. It took 2 small bucket and 5 large buckets to fill a 63 liter tank. How much does a large bucket hold? \n" ); document.write( "
Algebra.Com's Answer #161164 by gypsy1274(9)![]() ![]() ![]() You can put this solution on YOUR website! Let x = small bucket and y = large bucket. \n" ); document.write( "- 2 small buckets and 5 large buckets fill a 63 liter tank \n" ); document.write( "2x + 5y = 63\r \n" ); document.write( "\n" ); document.write( "- A large bucket holds 3 liters more than twice as much as a small bucket. \n" ); document.write( "y = 2x + 3\r \n" ); document.write( "\n" ); document.write( "y is already solved in terms of x. If it wasn't, that would be your first step.\r \n" ); document.write( "\n" ); document.write( "Replace all occurrences of y with the solution in the second equation that is already solved for y. \n" ); document.write( "2x + 5(2x+3) = 63\r \n" ); document.write( "\n" ); document.write( "Order of Operations determines the next action. Remove the parenthesis around the 2x+3 by distributing the 5. \n" ); document.write( "2x + 10x + 15 = 63\r \n" ); document.write( "\n" ); document.write( "Combine like terms: add 2x + 10x. \n" ); document.write( "12x + 15 = 63\r \n" ); document.write( "\n" ); document.write( "The goal is to get x by itself so subtract 15 from both sides. \n" ); document.write( "12x = 48\r \n" ); document.write( "\n" ); document.write( "Now divide both sides by 12. \n" ); document.write( "x = 4\r \n" ); document.write( "\n" ); document.write( "Now, since x = the small bucket = 4, we can figure out the size of the large bucket by returning to the second equation. \n" ); document.write( "y = 2x + 3\r \n" ); document.write( "\n" ); document.write( "Plug 4 in for x and solve for y. \n" ); document.write( "y = 2(4) + 3 \n" ); document.write( "y = 8 + 3 \n" ); document.write( "y = 11\r \n" ); document.write( "\n" ); document.write( "Always check your work.\r \n" ); document.write( "\n" ); document.write( "It took 2 small buckets (4 liters) and 5 large buckets (11 liters) to fill a 63 liter tank.\r \n" ); document.write( "\n" ); document.write( "2(4) + 5(11) = 63 \n" ); document.write( "8 + 55 = 63 \n" ); document.write( "63 = 63 \n" ); document.write( "The answers are correct.\r \n" ); document.write( "\n" ); document.write( "Go back to the original problem to make sure you are answering the correct question. \r \n" ); document.write( "\n" ); document.write( "How much does a large bucket hold? \n" ); document.write( "The large bucket holds 11 liters. \n" ); document.write( " |