SOLUTION: Andy weighs 21 pounds more than Rhoda. Their combined weight is 141 pounds less than four times Rhoda's weight. How much does Rhoda weigh?

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Question 755591: Andy weighs 21 pounds more than Rhoda. Their combined weight is 141 pounds less than four times Rhoda's weight. How much does Rhoda weigh?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Rhoda = x
Andy = x + 21
x + (x + 21) = (141 - 4x)
2x + 21 = 141 - 4x
Collect like terms, remembering
to change signs as you change sides.
2x + 4x = 141 - 21
6x = 120
x = 20lbs
Rhoda weighs 20lbs
Proof:
x + (x + 21) = (141 - 4x)
20 + (20 + 21) = (141 - 4(20))
20 + 41 = 141 - 80
61 = 61