Its a good thing this family has "just-in-case" funds because one month their car had two flat tires, and they spent $397.00 to buy new tires!

What percent of their monthly income was that expense?

(round to the nearest whole percent)

Monthly income: $3500.00

Housing costs: 30% ($1050.00)

Food: 20% ($700.00)

Clothing: 10%

Percentage of their monthly income for expenditure on new tires = 11.34%

Explanation:

Monthly income of the family = $3500.00

Expenditure on new tires = $397.00

Percentage of their monthly income was that expense = (Expenditure on new tires / Monthly income of the family) x 100

Percentage of their monthly income for expenditure on new tires = (397/3500) x100

= 11.34 %

So, percentage of their monthly income for expenditure on new tires = 11.34%