The line graph shows the amount of money Ivan spent from July to December.
- Of the amount Ivan spent in November, $122 was spent on food and the remaining amount was spent on transport. How much did he spend on transport in November?
- In which month did Ivan spend $300 less than the previous month? Give your answer in this format. (Eg Jan)
(a)
Amount that Ivan spent in November = $200
Amount that Ivan spent on transport
= 200 - 122
= $78
(b)
To find a decrease in a line graph, look for a decreasing slope.
The 2 decreasing slopes are from September to October and October to November. Now, find the month when Ivan spent $300 less than the previous month.
Amount that Ivan spent in September = $640
Amount that Ivan spent in October = $340
Amount that Ivan spent in October less than September
= 640 - 340
=
$300 (✓)
Amount that Ivan spent in October = $340
Amount that Ivan spent in November = $200
Amount that Ivan spent in November less than October
= 340 - 200
= $140 (x)
The month that Ivan spent $300 more than the previous month = Oct
Answer(s): (a) $78; (b) Oct