Roberto deposits $2,174.85 to his savings account each month.
Given:
Monthly pay = 4,349.70
Household expenses = 2/5 of his pay
Car payment = 1/10 of his pay
Savings = net of expenses.
Household expenses:
4,349.70 * 2/5 = 8,699.40/5 = 1,739.88
Car payment:
4,349.70 * 1/10 = 4,349.70/10 = 434.97
Monthly pay: 4,349.70
less: Household exp. 1,739.88
less: Car payment 434.97
Net of expenses 2,174.85 *deposit to savings account