Roberto and Luisa Barron Lopez each work full time jobs, and Luisa's mother, Carmena, collects a monthly pension of $628. Between the three of them, their total household income is $4238 each month. If Luisa earns $1772, how much does Roberto earn each month?
first, between involves two
among involves more than teo
l = 1772
c = 628
r + 1772 + 628 = 4238
r = 1838
To find out how much Roberto earns each month, we can subtract the amounts earned by Luisa and Carmena from the total household income.
Total household income = Roberto's income + Luisa's income + Carmena's pension
We know that the total household income is $4238 each month, and Luisa earns $1772 each month. Carmena's pension is $628.
So, we can substitute these values into the equation:
$4238 = Roberto's income + $1772 + $628
To solve for Roberto's income, we can rearrange the equation:
Roberto's income = $4238 - ($1772 + $628)
Roberto's income = $4238 - $2400
Roberto's income = $1838
Therefore, Roberto earns $1838 each month.