(a)[2]
Calculate the amount, in dollars, that is equivalent to 200 dirhams. Give your answer correct to 2 decimal places.
(b(i))[3]
Express $\frac{1000}{x} - \frac{1000}{x+1}$ as a single fraction, in simplest form.
(b(ii))[3]
Set up an equation in terms of $x$ and show that it reduces to $9x^2 + 9x - 2000 = 0$.
(b(iii))[4]
Use the quadratic formula to solve $9x^2 + 9x - 2000 = 0$. Show all working and give your answers correct to 2 decimal places.
(b(iv))[2]
Calculate how many euros Winston got in 2014. Give your answer correct to 2 decimal places.