The line graph shows the amount of money Andy spent from July to December.

1. Of the amount Andy spent in October, $167 was spent on food and the remaining amount was spent on transport. How much did he spend on transport in October?
2. In which month did Andy spend $180 less than the previous month? Give your answer in this format. (Eg Jan)

(a)
Amount that Andy spent in October = $440

Amount that Andy spent on transport
= 440 - 167
= $273

(b)
To find a decrease in a line graph, look for a decreasing slope. 

The 2 decreasing slopes are from July to August and October to November. Now, find the month when Andy spent $180 less than the previous month.

Amount that Andy spent in July = $200
Amount that Andy spent in August = $20

Amount that Andy spent in August less than July
= 200 - 20
= $180 (✓)

Amount that Andy spent in October = $440
Amount that Andy spent in November = $140

Amount that Andy spent in November less than October
= 440 - 140
= $300 (x)

The month that Andy spent $180 more than the previous month = Aug

Answer(s): (a) $273; (b) Aug