We know, Savings = Earnings - Spendings ∴ For Jamila, weekly savings will be
=$385 - $315 = $70. 1 week has 7 days.
Therefore, Jamila's savings in 1 day will be = $ 70÷7 = $ 10
Aarushi spends Rs. x daily and saves Rs. y per week. How much money she saves in xy2 weeks?