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 $6000 more in June than in March. 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 April and May.
(b)
Total number of vacuum cleaners
= 3 + 4 + 2 + 4 +20 + 7
= 40
Number of vacuum cleaners sold in March = 2
Fraction of the vacuum cleaners sold in the month of the lowest sale
=
240 =
120 (c)
Number of more vacuum cleaners in June than in March
= 7 - 2
= 5
5 u = 6000
1 u = 6000 ÷ 5 = 1200
Amount earned from selling a vacuum cleaner = $1200
Answer(s): (a) Apr, May or May, Apr; (b)
120; (c) $1200