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1. By solving the word problem given, the interest that was earned is calculated as: $60.

   How to Solve Word Problem?

   Given the word problem above, to find how much interest earned, we solve as shown below:

   New balance after earning interest = $420

   Let the original balance be represented as x

   Therefore, we would create the following equation to find the value of x:

   7/6 of x = 420

   7/6 × x = 420

   7/6x = 420

   Solve for x by multiplying both sides by 6/7

   7/6x  × 6/7 = 420 × 6/7

   x = (420 × 6)/7

   x = 360

   The original balance is $320

   Interest = New balance – original balance

   Interest = $420 – $320

   Interest = $60

   Thus, solving the word problem given, the interest that was earned is calculated as: $60.

   Learn more about word problem on:

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