(a(i))[1]
State the ratio of Alex’s money to Bobbie’s money in simplest form.
(a(ii))[1]
State the ratio of Alex’s remaining money to Bobbie’s remaining money in its simplest form.
(a(iii))[2]
State the new ratio of Alex’s remaining money to Bobbie’s remaining money in simplest form.
(b(i))[3]
Calculate the percentage decrease in the population.
(b(ii))[3]
Calculate the population in the year 1980.
(c)[2]
Find the value of $x$.
(d)[3]
Calculate the value of $y$, correct to 1 decimal place.