SOLUTION: What is the formula to solve this problem and how would I make a chart to use with the formula? Mona earns three times as much as an actuary as she does as a writer. Her total in

Question 102631This question is from textbook
: What is the formula to solve this problem and how would I make a chart to use with the formula?
Mona earns three times as much as an actuary as she does as a writer. Her total income is $40,000 more than her brother. He makes half as much as Mona does as an actuary. What is Mona's salary as an actuary? This question is from textbook

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Mona earns three times as much as an actuary as she does as a writer. Her total income is $40,000 more than her brother. He makes half as much as Mona does as an actuary. What is Mona's salary as an actuary?
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Let brother's salary be "b" ; Let Mona's salary be "m".
EQUATIONS:
m = b + 40000
b = (1/2)m
-----------------
Substitute to get:
m = (1/2)m + 40000
(1/2)m = 40000
m = $80000 (Mona's salary)
Substitute to solve for "b":
b = (1/2)80000
b = $40000 (brother's salary)
================
Cheers,
Stan H.

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