Problema Solution
A bag contains 2 steel balls and 5 brass balls. The total weight is 13 pounds. If 2 steel balls are added and 2 brass balls are removed, the weight decreases to 12 pounds. How much does each kind of ball weigh?
Answer provided by our tutors
let
x = the weight of one steel ball
y = the weight of one brass ball
2x + 5y = 13
(2 + 2)x + (5 - 2)y = 12
by solving the above system of equations we find:
x = 1.5 lbs
y = 2 lbs
click here to see the step by step solution of the system of equations:
one steel ball weighs 1.5 lbs.
one brass ball weighs 2 lbs.