This bar chart shows the average monthly expenditure, by category, of households in a particular town in 2005 and 2015 - OCR - GCSE Maths - Question 6 - 2018 - Paper 1

To find out how much more was spent on housing in 2015 than in 2005, we check the values on the bar chart. In 2015, the expenditure was £560, while in 2005 it was £480.

Thus, the difference is:

egin{align*} 560 - 480 = 80 \end{align*}

So, the average monthly expenditure on housing in 2015 was £80 more than in 2005.

In 2005, the total average monthly expenditure was £1200. According to the bar chart, the amount spent on transport in 2005 was £240. To calculate the percentage spent on transport:

egin{align*} ext{Percentage} = rac{240}{1200} imes 100 = 20
\end{align*}

Therefore, 20% of the total average monthly expenditure in 2005 was spent on transport.