document.write( "Question 1141187: 3/5 of the number of pens displayed at the bookstore were red and the rest were blue.After 260 red pens, and 1/4 of the blue pens were sold, 1/2 of the pens were left.How many pens were displayed at the bookstore first?
\n" ); document.write( "Can you please help me how to solve this by equation??
\n" ); document.write( "Thanks in advance \n" ); document.write( "

Algebra.Com's Answer #761725 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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3/5 of the number of pens displayed at the bookstore were red and the rest were blue.
\n" ); document.write( "let p = total no. of pens
\n" ); document.write( "then
\n" ); document.write( " $\"3%2F5\"$ p = no. of red pens
\n" ); document.write( "and
\n" ); document.write( " $\"2%2F5\"$ p = no. of blue
\n" ); document.write( ":
\n" ); document.write( "After 260 red pens, and 1/4 of the blue pens were sold, 1/2 of the pens were left.
\n" ); document.write( "260 + $\"1%2F4\"$ * $\"2%2F5\"$ p = $\"1%2F2\"$ p
\n" ); document.write( "260 + $\"2%2F20\"$ = $\"1%2F2\"$ p
\n" ); document.write( "reduce fraction
\n" ); document.write( "260 + $\"1%2F10\"$ p = $\"1%2F2\"$ p
\n" ); document.write( "get rid of denominator, multiply by 10
\n" ); document.write( "2600 + p = 5p
\n" ); document.write( "2600 = 5p - p
\n" ); document.write( "2600 = 4p
\n" ); document.write( "p = 2600/4
\n" ); document.write( "p = 650
\n" ); document.write( ":
\n" ); document.write( "How many pens were displayed at the bookstore first? 650 \n" ); document.write( "

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