Problema Solution
If I give my sister 17 dollars, then we will have the same amount of money. If instead she gives me 23 dollars, then I'll have three times as much money as she has. How much money does she currently have (in dollars)?
Answer provided by our tutors
let
m = the money I currently have
s = the money my sister currently has
if I give my sister 17 dollars, then we will have the same amount of money
m - 17 = s + 17
if instead she gives me 23 dollars, then I'll have three times as much money as she has
m + 23 = 3(s - 23)
by solving the system of equations
m - 17 = s + 17
m + 23 = 3(s - 23)
we find
m = $97
s = $63
click here to see the step by step solution of the system of equations
my sister currently has $63.