In order to have USD 30000 available today how much in AED s

In order to have USD 30,000 available today, how much in AED should I have deposited into a bank savings account one year ago? The bank savings account pays an interest rate of 4.25%, and the currency exchange rate is 1 USD = 3.67295 AED

Solution

1 USD = 3.67295 AED

30000 USD= 110288.5 AED

Let the amount in AED which should have been deposited 1 year ago be X, Then

X+0.0425X= 110288.5

1.0425X= 110288.5

X= 105696.40288 AED

105696.40288 AED  should have been deposited into a bank savings account one year ago