Question 1181774
x accommodation price per day
y meal price  (  * not that)


The assumption that 1 day and 1 "night" are the same price, which may be an incorrect assumption:
*   {{{system(5x+3*15y=550,6x+2*6y=600)}}


{{{system(x+9y=110,x+2y=60)}}}
{{{system(x+9y=110,x+2y=100)}}}

-
.
<s>Does not seem right.  Expecting whole number in pennies</s>

*  Mistake in interpreting meals in the day and the "night"