# SOLUTION: a rental car place rents out cars. barney is charged \$111 for 3 days and 300 miles, mary is charged \$207 for 5 days and 600 miles. what do they charge per day and per mile?

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 Question 325044: a rental car place rents out cars. barney is charged \$111 for 3 days and 300 miles, mary is charged \$207 for 5 days and 600 miles. what do they charge per day and per mile?Answer by checkley77(12569)   (Show Source): You can put this solution on YOUR website!3D+300M=111 MULTIPLY BY 2 5D+600M=207 MULTIPLY BY -1 & ADD 6D+600M=222 -5D-600M=-207 ---------------- D=\$13 PER DAY 3*15+300M=111 45+300M=111 300M=111-45 300M=66 M=66/300 M=\$.22 PER MILE. PROOF: 5*15+600*.22=207 75+132=207 207=207