Question 169633
let what madison, abigail, and brian spent be m,a,b respectively.
:
m+a+b=1182...eq 1
a=m+142......eq 2
b=m+353......eq 3
:
take the value of a in eq 2 and the value of b in eq 3 and plug them into the 3rd equation.
:
m+(m+142)+(m+353)=1182
:
3m+495=1182
:
3m=687:
{{{m=229}}}dollars mary spent
using eq 2:{{{a=229+142=371)}}} dollars abigail spent
:
using eq 1:{{{highlight(b=229+353=582)}}}dollars BRIAN spent