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 $10400 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
= 5 + 15 + 4 + 15 +22 + 17
= 78
Number of vacuum cleaners sold in March = 4
Fraction of the vacuum cleaners sold in the month of the lowest sale
=
478 =
239 (c)
Number of more vacuum cleaners in June than in March
= 17 - 4
= 13
13 u = 10400
1 u = 10400 ÷ 13 = 800
Amount earned from selling a vacuum cleaner = $800
Answer(s): (a) Apr, May or May, Apr; (b)
239; (c) $800