We have an intial amount

s that get intrest for

y years.

Now rate of interest is

5% and compunded every 4 months.

So after y years the amount would be

= s \times (1 + \frac{5}{100})^{y \times 3}Also an additional 10 dollars will accrue interest over

y-1 years

= 10 \times (1 + \frac{5}{100})^{(y-1) \times 3}Hence option E is correct!PS: I do not think this is a GRE Question please share the source

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Sandy

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