Mona's salary as writer --- x
salary as actuary -- 3x
brother's salary = 3x/2
"Her total income is $40,000 more than her brother."
---> x + 3x = 3x/2 + 40000
4x - 1.5x = 40000
2.5x = 40000
x = 16000
Mona as writer --- 16000
Mona as actuary --- 48000
brother -----24000
All information checks
Mona earns 3 times as much as an actuary as she does as a writer. Her total income is $40,000 more than her brother. He earns half as much as Mona does as an actuary. What is Mona's salary as an actuary?
1 answer