Solving for Unknown Variables for Different Investment Needs

Answer the requirements in the following two separate cases.

For #$1,$ Enter the percent rounded to two digits after the decimal; enter $2\mathrm{.}04$ for $2\mathrm{.}044\%$ or $2\mathrm{.}05$ for $2\mathrm{.}045\%.$

For #$2,$ Enter the answer rounded to one digit after the decimal; for example, enter $1\mathrm{.}4$ for $1\mathrm{.}44$ or $1\mathrm{.}5$ for $1\mathrm{.}45.$

At today's date, Etna Inc. has $$32,000$ that is deposited in an investment account until needed.

It is anticipated that $$111,000$ will be needed at the end of $10$ years to expand manufacturing.

What approximate rate of interest is required to accumulate $$111,000,$ assuming compounding

on an annual basis?

Visi Inc. plans an addition to its building as soon as adequate funds are accumulated.

The company has estimated that the addition will cost $$160,000.$ At today's date, $$90,600$ cash is

available for investment, and such a fund pays $6\%$ interest $($compounded annually$).$

How many periods would be required to accumulate the $$160,000?$