The line graph shows the total number of used notebooks sold by a dealer in the first six months of the year.
- In which two months were there a consecutive increase in the number of notebooks sold? Give the answer in short form. (Eg Jan, Feb)
- What fraction of the notebooks was sold in the month of the lowest sale?
- The dealer was paid a fixed amount of money for every notebook he sold. He received $8100 more in May than in June. How much money did he receive from selling a notebook?
(a)
There was a consecutive increase in the number of notebooks sold in February and March.
(b)
Total number of notebooks
= 7 + 13 + 29 + 2 + 22 + 13
= 86
Number of notebooks sold in April = 2
Fraction of the notebooks sold in the month of the lowest sale
=
286 =
143 (c)
Number of more notebooks sold in May than in June
= 22 - 13
= 9
9 u = 8100
1 u = 8100 ÷ 9 = 900
Amount earned from selling a notebook = $900
Answer(s): (a) Feb, Mar or Mar, Feb; (b)
143; (c) $900