Question 1(a)
Read the source material carefully before answering Question 1.

Source material: Bank mergers
In 2019, there was a merger between three Nigerian commercial banks to form Nigeria's largest commercial bank. In 2019, two US commercial banks merged to form the US's 6th largest commercial bank. In the US, the three largest banks controlled of the market. In the US and Nigeria, large banks have opened more branches, carried out advertising campaigns and improved online banking.
Bank mergers can result in some bank employees losing their jobs. Unemployment did rise in Nigeria in 2019. This is likely to have affected the government's budget as both government tax revenue and government spending will have changed. Most commercial bank workers are well-educated. The number of years of education people receive can affect a country's birth rate. Fig. 1.1 shows average years of schooling and the birth rate in selected countries in 2019.

Fig. 1.1 Average years of schooling and birth rate in selected countries 2019
Some households in both Nigeria and the US, who spend more than they earn, borrow from commercial banks. Some children in Nigeria, in low-income households, do not have enough to eat due to the high price of food. A government subsidy to farmers could be used to help low-income Nigerian households. The subsidy could also help to reduce the deficit on the current account of its balance of payments. This will depend on Nigeria's inflation rate compared with other countries and incomes at home and abroad.
In the US, nearly of children are overweight. One cause of this is the consumption of high-sugar food and drinks. The US government could impose a minimum price on such products, including chocolate. A minimum price could move the market closer to where social benefit equals social cost. However, some consumers think it would be unfair and some firms think it would reduce profits. A minimum price may also impose a cost on the government and its success would be influenced by how high the minimum price is set.
Calculate how many dollars 6400 Nigerian naira would have bought in 2019.
