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 $9900 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
= 8 + 19 + 28 + 6 + 30 + 19
= 110
Number of notebooks sold in April = 6
Fraction of the notebooks sold in the month of the lowest sale
=
6110 =
355 (c)
Number of more notebooks sold in May than in June
= 30 - 19
= 11
11 u = 9900
1 u = 9900 ÷ 11 = 900
Amount earned from selling a notebook = $900
Answer(s): (a) Feb, Mar or Mar, Feb; (b)
355; (c) $900