The final amount after the changes is 1233.02
The initial amount is given as:
Initial = 1235
When increased by 4%, we have:
New = 1235 * (1 + 4%)
When decreased by 4%, we have:
New = 1235 * (1 + 4%) * (1 - 4%)
Evaluate the expression
New = 1233.024
Approximate
New = 1233.02
Hence, the final amount after the changes is 1233.02
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