The line graph shows the total number of used vacuum cleaners 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 vacuum cleaners sold? Give the answer in short form. (Eg Jan, Feb)
- What fraction of the vacuum cleaners was sold in the month of the lowest sale?
- The dealer was paid a fixed amount of money for every vacuum cleaner he sold. He received $2800 more in April than in February. How much money did he receive from selling a vacuum cleaner?
(a)
There was a consecutive increase in the number of vacuum cleaners sold in March and April.
(b)
Total number of vacuum cleaners
= 30 + 14 + 16 + 29 + 25 + 16
= 130
Number of vacuum cleaners sold in February = 14
Fraction of the vacuum cleaners sold in the month of the lowest sale
=
14130 =
765 (c)
Number of more vacuum cleaners sold in April than in February
= 29 - 14
= 15
15 u = 2800
1 u = 2800 ÷ 15 = 900
Amount earned from selling a vacuum cleaner = $900
Answer(s): (a) Mar, Apr or Apr, Mar; (b)
765; (c) $900