document.write( "Question 185616: Solve Problems Using Linear Systems
\n" ); document.write( "16. A class trip is being planned. For one option, each student will pay $630. This includes two meals a day and accommodation for the 9-day trip. The other option offers three meals a day and accommodationfor the 9 days. This second option costs $720. What is the cost per meal? What is th cost per day for accommodation?
\n" ); document.write( "(The answer is $10 per meal, $50 per day for accommodation, but i dont know how to solve it?)
\n" ); document.write( "

Algebra.Com's Answer #139247 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
9D+18M=630 MULTIPLY BY -1 & ADD THESE 2 EQUATIONS.
\n" ); document.write( "9D+27M=720
\n" ); document.write( "-9D-18M=-630
\n" ); document.write( "-----------------------
\n" ); document.write( "9M=90
\n" ); document.write( "M=90/9
\n" ); document.write( "M=$10 FOR EACH MEAL.
\n" ); document.write( "9D+18*10=630
\n" ); document.write( "9D+180=630
\n" ); document.write( "9D=630-180
\n" ); document.write( "9D=450
\n" ); document.write( "D=450/9
\n" ); document.write( "D=$50 PER DAY.
\n" ); document.write( "
\n" );