
You make 300% in the first 6 months, and continue with the same performance rate till year's end...The question is worded in such a way as to be ambiguous. Is it 300% for the first 6 months, then another 300% for the second 6 months to complete the year. If so, none of these answers would be correct.
I use this formula:
100 * (1 + p/100)^n - 100
where p is the percentage (here 300), and n=number of intervalls (here 2 because there are two 6-months in a year).
I'm getting 1500%.
It's actually a form of this compound interest formula:Wow. Don't know how you find it.
Is it yours ? If so, well done.
Looks like it works =P
It's actually a form of this compound interest formula:
https://en.wikipedia.org/wiki/Compound_interest#Compound_interest
But the result really surprised me, and that was the motivation to make quiz out of it.