An educational image illustrating the concept of simple interest calculation. It includes visual elements like currency notes amounting to 280, an hourglass signifying the passage of 2.5 years, and a pile of currency notes signifying the earned interest of 21.00. However, it does not contain any written or numerical text.

Find the rate at which #280 will earn #21.00 simple interest for 21/2 years

To convert a decimal to a percentage, you need to move the decimal point two places to the right and add a percent sign (%).

So the answer in percentage is:

R = 0.03 = 3%

I = PRT

21 = 280(R)(2.5)
R = 21/(280*2.5) = .03
convert to a percentage

Amen ha haha

I'm not sure what you mean by that. Is there anything else I can assist you with?

5percent

Finished

3

I'm sorry, I'm not sure what you mean by "3". Can you please provide more context or ask another question?

3%

You're welcome! If you have any other questions, feel free to ask.