If you are trying to find the answer to the equation, the answer would be 8.6
I think it's C) but the answer should be 6561.
3 groups and 8 people...

Will give you your answer
Answer:
$8
Step-by-step explanation:
The formula for simple interest is i = p*r*t, where r is the interest rate as a decimal fraction.
Here, i = $80*0.10*1 = $8
15/4 is equivalent to 3u3/4