3. Newlyweds Alexander and Natalia successfully got jobs at an advertising company in April. With their earnings, they want to buy new phones next month: phone "A" for Alexander, which costs 57,000 rubles, and phone "B" for Natalia, costing 37,000 rubles. Will they be able to do this, given the following data?

- Alexander's salary is 125,000 rubles.
- Natalia's salary is 61,000 rubles.
- They spend 17,000 rubles per month on utilities, transportation, and daily needs.
- They spend 15,000 rubles per month on loan repayment and maintenance.
- Cultural entertainment expenses per month (1 theater visit - 5,000 rubles, and 1 movie visit - 1,000 rubles - ticket price per person).
- Savings for a trip to Crimea - they save 20,000 rubles per month, planning to go in August.
- Dining out expenses for both on weekdays - 1,500 rubles, and on weekends - 3,000 rubles (20 weekdays and 10 weekends in a month).

a) Determine the total expenses.

b) Determine the net income.

c) Will the couple be able to buy the phones? Provide a detailed answer. (20 points)
Answer:

a) Total expenses: $17000+15000+12000+20000+30000+30000=$ $=124000$ (4 points);

b) Net income: $(125000+61000) \times 13 \% = 24180.186000 - 24180=$ $=161820$ (6 points);

c) Remaining funds: $161820-124000=37820$. The phone can only be bought for Natalia, and to buy a phone for Alexander, it is necessary to forego the trip to Crimea or postpone the trip to September and catch the off-peak season (10 points).

- calculation errors were made, an incorrect numerical answer was given, a correct conclusion was drawn (2 points)