document.write( "Question 937257: 2 1/2 busloads of students are going on a trip, if 3/5 of the students are girls, how many buses are need to take only the girls? \n" ); document.write( "

Algebra.Com's Answer #570713 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
If you doubled the number of buses, but kept the ratio
\n" ); document.write( "of ( girls ) / ( total students ) = $\"+3%2F5+\"$ , then you have:
\n" ); document.write( " $\"+5+\"$ buses
\n" ); document.write( " $\"+%283%2F5%29%2A5+=+3+\"$
\n" ); document.write( " $\"+3+\"$ of the buses needed for just girls
\n" ); document.write( "------------------------------------
\n" ); document.write( "Now you have to scale this back down by $\"+1%2F2+\"$
\n" ); document.write( " $\"+%281%2F2%29%2A3+=+3%2F2+\"$
\n" ); document.write( "1 1/2 buses are needed for just girls
\n" ); document.write( "-----------------
\n" ); document.write( "Suppose there are $\"+10+\"$ students
\n" ); document.write( " $\"+%283%2F5%29%2A10+=+6+\"$ girls
\n" ); document.write( "------------------
\n" ); document.write( "Putting $\"+6+\"$ girls in 1 1/2 buses, I have
\n" ); document.write( " $\"+4+\"$ filling 1 bus
\n" ); document.write( " $\"+2+\"$ in the $\"+1%2F2+\"$ bus
\n" ); document.write( "------------------------
\n" ); document.write( "That leaves $\"+4+\"$ boys
\n" ); document.write( " $\"+4+\"$ boys fill 1 bus
\n" ); document.write( " $\"+1+%2B+1%2F2+%2B+1+\"$ = 2 1/2 buses
\n" ); document.write( "OK\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );