Answer = £6911
Compound interest of 5% means multiplying by 1.05 each year.
Let’s call the missing value x
To find x, we need to do:
(X) * 1.05 * 1.05 * 1.05 = 8000
So, to find x, divide 8000 by 1.05^3
The answer is D, 35 hours. 8+5=15. And then 35 + 15 is 50!
The answers are
1. 18
2. 1 1/15