If the amount of rent paid by a mechanic is 4/9 of the mechanic's monthly income and the rent expense is $1,800, his monthly income is $4,050.
How the monthly income is determined:
The proportion of rent paid of the mechanic's monthly income = 4/9
The rent expense = $1,800
Proportionately, the total monthly income = $4,050 ($1,800 ÷ 4/9)
Check:
Monthly income = $4,050
Proportion of rent to the monthly income = 4/9
Rent expense = $1,800 ($4,050 x 4/9)
Complete Question:
The amount of rent paid by a mechanic is 4/9 of the mechanic's monthly income. Using the figure below, determine the mechanic's monthly income (in dollars). His rent is $1800.