Ana wants to take a trip to japan in 8 years. she currently has $4,200 in her account. how long will it take for her to double her balance with a 3.5% simple interest rate so she has enough money to go on her trip?

28.6 years

Step-by-step explanation:

If the balance doubles then Ana will have a total of 8400 in her account. The interest earned with thus be;

8400-4200 = 4200

Next, we apply the simple interest formula to determine the duration it will take for this level of interest to be realized;

(x, y)→(x − 8, y − 7)

step-by-step explanation:

enjoy!

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