Tammy received $90 from her father each month for her allowance. The line graph shows the amount of allowance she spent each month.
- What is the difference between the amounts Tammy spent in Oct and in Dec?
- Write down all the months in which Tammy spent more than half her allowance. Give the answer in short form. (Eg Jan, Mar)
(a)
Amount that Tammy spent in Aug = $60
Amount that Tammy spent in Sep = $30
Amount that Tammy spent in Oct = $21
Amount that Tammy spent in Nov = $40
Amount that Tammy spent in Dec = $60
Difference between the amounts Tammy spent in Oct and Dec
= 60 - 21
= $39
(b)
Half of Tammy's monthly allowance
= 90 ÷ 2
= $45
Months in which Tammy spent more than half her allowance: Aug, Dec
Answer(s): (a) $39; (b) Aug, Dec